diff --git a/gemini/error.go b/gemini/error.go
index 3c01815..5693efb 100644
--- a/gemini/error.go
+++ b/gemini/error.go
@@ -45,7 +45,7 @@ var (
 	errNotFoundRsp         = buildResponseHeader(statusNotFound, "Not Found")
 	errTemporaryFailureRsp = buildResponseHeader(statusTemporaryFailure, "Temporary Failure")
 	errPermanentFailureRsp = buildResponseHeader(statusPermanentFailure, "Permanent Failure")
-	errInvalidRequestRsp   = buildResponseHeader(statusBadRequest, "Invalid Request")
+	errBadRequestRsp       = buildResponseHeader(statusBadRequest, "Bad Request")
 )
 
 // generateErrorResponse takes an error code and generates an error response byte slice
@@ -74,13 +74,13 @@ func generateErrorResponse(err error) ([]byte, bool) {
 	case errors.Is(err, core.ErrRestrictedPath):
 		return errRestrictedRsp, true
 	case errors.Is(err, core.ErrInvalidRequest):
-		return errInvalidRequestRsp, true
+		return errBadRequestRsp, true
 	case errors.Is(err, core.ErrParsingScheme):
-		return errInvalidRequestRsp, true
+		return errBadRequestRsp, true
 	case errors.Is(err, core.ErrParsingHost):
-		return errInvalidRequestRsp, true
+		return errBadRequestRsp, true
 	case errors.Is(err, core.ErrParsingURI):
-		return errInvalidRequestRsp, true
+		return errBadRequestRsp, true
 	case errors.Is(err, core.ErrCGIStart):
 		return errPermanentFailureRsp, true
 	case errors.Is(err, core.ErrCGIExitCode):
diff --git a/gemini/server.go b/gemini/server.go
index 06c16bc..20ee129 100644
--- a/gemini/server.go
+++ b/gemini/server.go
@@ -24,7 +24,7 @@ func serve(client *core.Client) {
 	// Ensure is a valid URL string
 	if core.HasAsciiControlBytes(raw) {
 		client.LogError("Invalid request: %s", raw)
-		handleError(client, core.ErrInvalidRequest.Extend("has ascii control bytes"))
+		handleError(client, core.ErrInvalidRequest.Extendf("%s has ascii control bytes", raw))
 		return
 	}
 
diff --git a/go.mod b/go.mod
index a3a6bd5..5165ae6 100644
--- a/go.mod
+++ b/go.mod
@@ -5,7 +5,7 @@ go 1.15
 require (
 	github.com/grufwub/go-bufpools v0.1.1
 	github.com/grufwub/go-config v0.1.0
-	github.com/grufwub/go-errors v0.3.1
+	github.com/grufwub/go-errors v0.3.2
 	github.com/grufwub/go-filecache v0.1.0
 	github.com/grufwub/go-logger v0.1.1
 )
diff --git a/go.sum b/go.sum
index 070490b..f982082 100644
--- a/go.sum
+++ b/go.sum
@@ -4,8 +4,8 @@ github.com/grufwub/go-bufpools v0.1.1 h1:TOUKNY+UaQ784EtvP+wKoXssYQQRX5zewtrZ7u4
 github.com/grufwub/go-bufpools v0.1.1/go.mod h1:ITqLRtG+W1bZHGdkWewV7inb+GcWfq2Jcjqx4AZ7aBY=
 github.com/grufwub/go-config v0.1.0 h1:/UDEmprs4h4qEkgmQqthmtGZeJs8eB44qMVSqa+5sxU=
 github.com/grufwub/go-config v0.1.0/go.mod h1:0U5Y0EkNeL09YkY70fNZv4Kelfayp/VroEs2UzmUG04=
-github.com/grufwub/go-errors v0.3.1 h1:Q0N5njkkFgAquX26MmNctonYD86htRly8yEZyWIhF+E=
-github.com/grufwub/go-errors v0.3.1/go.mod h1:AXGtU2fWv8ejaUUT0+9wTOlWqcxYDo8wuYnhrYtoBKM=
+github.com/grufwub/go-errors v0.3.2 h1:IB17KWLB+NNXCb+YUPMxPpvlNXGpxt0Xpad7wPxxRoo=
+github.com/grufwub/go-errors v0.3.2/go.mod h1:AXGtU2fWv8ejaUUT0+9wTOlWqcxYDo8wuYnhrYtoBKM=
 github.com/grufwub/go-filecache v0.1.0 h1:OugzIHzLco8LLRnAlD7m6zSFQTILjltNO8Hhr/8vcCo=
 github.com/grufwub/go-filecache v0.1.0/go.mod h1:iAfqEfsC5YsyGD+f8JducuWeRqCDBVPi1+VmCaPL07Q=
 github.com/grufwub/go-logger v0.1.1 h1:KnD6NNyeq3cz6dZKW/Gr+Fz9dNvkLf8KvYZXKGM5cN0=
diff --git a/gopher/error.go b/gopher/error.go
index 837843f..7a62332 100644
--- a/gopher/error.go
+++ b/gopher/error.go
@@ -6,11 +6,37 @@ import (
 	"github.com/grufwub/go-errors"
 )
 
-// Gopher specific error codes
+// Gopher specific errors
 var (
-	errInvalidGophermap  = errors.Error(invalidGophermapErrStr)
-	errSubgophermapIsDir = errors.Error(subgophermapIsDirErrStr)
-	errSubgophermapSize  = errors.Error(subgophermapSizeErrStr)
+	errInvalidGophermap  = errors.BaseError("invalid gophermap")
+	errSubgophermapIsDir = errors.BaseError("subgophermap path is dir")
+	errSubgophermapSize  = errors.BaseError("subgophermap size too large")
+)
+
+// Gopher response error text
+const (
+	statusBadRequest          = "400 Bad Request"
+	statusUnauthorized        = "401 Unauthorised"
+	statusForbidden           = "403 Forbidden"
+	statusNotFound            = "404 Not Found"
+	statusRequestTimeout      = "408 Request Time-out"
+	statusGone                = "410 Gone"
+	statusInternalServerError = "500 Internal Server Error"
+	statusNotImplemented      = "501 Not Implemented"
+	statusServiceUnavailable  = "503 Service Unavailable"
+)
+
+// Gopher error responses
+var (
+	errBadRequestRsp          = buildErrorLine(statusBadRequest)
+	errUnauthorizedRsp        = buildErrorLine(statusUnauthorized)
+	errForbiddenRsp           = buildErrorLine(statusForbidden)
+	errNotFoundRsp            = buildErrorLine(statusNotFound)
+	errRequestTimeoutRsp      = buildErrorLine(statusRequestTimeout)
+	errGoneRsp                = buildErrorLine(statusGone)
+	errInternalServerErrorRsp = buildErrorLine(statusInternalServerError)
+	errNotImplementedRsp      = buildErrorLine(statusNotImplemented)
+	errServiceUnavailableRsp  = buildErrorLine(statusServiceUnavailable)
 )
 
 // generateErrorResponse takes an error code and generates an error response byte slice
@@ -19,42 +45,39 @@ func generateErrorResponse(err error) ([]byte, bool) {
 	case errors.Is(err, core.ErrConnWrite):
 		return nil, false // no point responding if we couldn't write
 	case errors.Is(err, core.ErrConnRead):
-		return buildErrorLine(errorResponse503), true
+		return errServiceUnavailableRsp, true
 	case errors.Is(err, core.ErrConnClose):
 		return nil, false // no point responding if we couldn't close
 	case errors.Is(err, core.ErrMutexUpgrade):
-		return buildErrorLine(errorResponse500), true
+		return errServiceUnavailableRsp, true
 	case errors.Is(err, core.ErrMutexDowngrade):
-		return buildErrorLine(errorResponse500), true
+		return errServiceUnavailableRsp, true
 	case errors.Is(err, core.ErrFileOpen):
-		return buildErrorLine(errorResponse404), true
+		return errNotFoundRsp, true
 	case errors.Is(err, core.ErrFileStat):
-		return buildErrorLine(errorResponse500), true
+		return errNotFoundRsp, true
 	case errors.Is(err, core.ErrFileRead):
-		return buildErrorLine(errorResponse500), true
+		return errNotFoundRsp, true
 	case errors.Is(err, core.ErrFileType):
-		return buildErrorLine(errorResponse404), true
+		return errNotFoundRsp, true
 	case errors.Is(err, core.ErrDirectoryRead):
-		return buildErrorLine(errorResponse500), true
+		return errNotFoundRsp, true
 	case errors.Is(err, core.ErrRestrictedPath):
-		return buildErrorLine(errorResponse403), true
-
-	// All forms of invalid request
+		return errForbiddenRsp, true
 	case errors.Is(err, core.ErrInvalidRequest):
-		return buildErrorLine(errorResponse400), true
+		return errBadRequestRsp, true
 	case errors.Is(err, core.ErrParsingScheme):
-		return buildErrorLine(errorResponse400), true
-
+		return errBadRequestRsp, true
 	case errors.Is(err, core.ErrCGIStart):
-		return buildErrorLine(errorResponse500), true
+		return errInternalServerErrorRsp, true
 	case errors.Is(err, core.ErrCGIExitCode):
-		return buildErrorLine(errorResponse500), true
+		return errServiceUnavailableRsp, true
 	case errors.Is(err, errInvalidGophermap):
-		return buildErrorLine(errorResponse500), true
+		return errInternalServerErrorRsp, true
 	case errors.Is(err, errSubgophermapIsDir):
-		return buildErrorLine(errorResponse500), true
+		return errInternalServerErrorRsp, true
 	case errors.Is(err, errSubgophermapSize):
-		return buildErrorLine(errorResponse500), true
+		return errInternalServerErrorRsp, true
 	default:
 		return nil, false
 	}
diff --git a/gopher/format.go b/gopher/format.go
index c39e667..46b7ead 100644
--- a/gopher/format.go
+++ b/gopher/format.go
@@ -57,8 +57,8 @@ func buildInfoLine(line string) []byte {
 }
 
 // buildErrorLine builds a gopher error line string
-func buildErrorLine(selector string) []byte {
-	return []byte(string(typeError) + selector + "\r\n" + ".\r\n")
+func buildErrorLine(text string) []byte {
+	return []byte(string(typeError) + text + "\r\n" + ".\r\n")
 }
 
 // appendFileListing formats and appends a new file entry as part of a directory listing
diff --git a/gopher/gophermap.go b/gopher/gophermap.go
index 8846914..22679cc 100644
--- a/gopher/gophermap.go
+++ b/gopher/gophermap.go
@@ -3,7 +3,6 @@ package gopher
 import (
 	"gophi/core"
 	"os"
-	"strconv"
 
 	"github.com/grufwub/go-errors"
 )
@@ -46,7 +45,7 @@ func readGophermap(file *os.File, p *core.Path) ([]gophermapSection, error) {
 					titleAlready = true
 					return true
 				}
-				returnErr = errInvalidGophermap
+				returnErr = errInvalidGophermap.Extendf("%s multiple title declarations", p.Absolute())
 				return false
 
 			case typeComment:
@@ -69,7 +68,7 @@ func readGophermap(file *os.File, p *core.Path) ([]gophermapSection, error) {
 				// equal to current gophermap (recurse!!!) we return error
 				request := core.NewRequest(core.BuildPath(path), query)
 				if request.Path().Relative() == "" || request.Path().Relative() == p.Relative() {
-					returnErr = errInvalidGophermap
+					returnErr = errInvalidGophermap.Extendf("%s invalid subgophermap '%s'", p.Absolute(), request.Path().Absolute())
 					return false
 				}
 
@@ -83,10 +82,10 @@ func readGophermap(file *os.File, p *core.Path) ([]gophermapSection, error) {
 				// Get stat
 				stat, err := subFile.Stat()
 				if err != nil {
-					returnErr = errors.WrapError(core.ErrFileStat, err)
+					returnErr = errors.With(err).WrapWithin(core.ErrFileStat)
 					return false
 				} else if stat.IsDir() {
-					returnErr = errors.Wrap(request.Path().Absolute(), errSubgophermapIsDir)
+					returnErr = errSubgophermapIsDir.Extend(request.Path().Absolute())
 					return false
 				}
 
@@ -98,7 +97,7 @@ func readGophermap(file *os.File, p *core.Path) ([]gophermapSection, error) {
 
 				// Error out if file too big
 				if stat.Size() > subgophermapSizeMax {
-					returnErr = errors.Wrap(strconv.FormatInt(stat.Size(), 10), errSubgophermapSize)
+					returnErr = errSubgophermapSize.Extendf("%s %.2fMB", request.Path().Absolute(), stat.Size()/1000.0)
 					return false
 				}
 
diff --git a/gopher/server.go b/gopher/server.go
index b62a4b3..799cbc1 100644
--- a/gopher/server.go
+++ b/gopher/server.go
@@ -18,7 +18,7 @@ func serve(client *core.Client) {
 	// Receive line from client
 	received, err := client.Conn().ReadLine()
 	if err != nil {
-		client.LogError(clientReadFailStr)
+		client.LogError("Conn read fail")
 		handleError(client, err)
 		return
 	}
@@ -30,15 +30,15 @@ func serve(client *core.Client) {
 
 	// Ensure we've received a valid URL string
 	if core.HasAsciiControlBytes(raw) {
-		client.LogError(invalidRequestStr, raw)
-		handleError(client, core.ErrInvalidRequest)
+		client.LogError("Invalid request: %s", raw)
+		handleError(client, core.ErrInvalidRequest.Extendf("%s has ascii control bytes", raw))
 		return
 	}
 
 	// Parse the encoded URI into path and query components
 	path, query, err := core.ParseEncodedURI(raw)
 	if err != nil {
-		client.LogError(invalidRequestStr, raw)
+		client.LogError("Invalid request: %s", raw)
 		handleError(client, err)
 		return
 	}
@@ -47,7 +47,7 @@ func serve(client *core.Client) {
 	if strings.HasPrefix(path, "/URL:") {
 		raw = raw[5:]
 		client.Conn().Write(generateHTMLRedirect(raw))
-		client.LogInfo(gopherRedirectStr, raw)
+		client.LogInfo("Redirect to: %s", raw)
 		return
 	}
 
@@ -61,9 +61,9 @@ func serve(client *core.Client) {
 	// Final error handling
 	if err != nil {
 		handleError(client, err)
-		client.LogError(clientServeFailStr, request.String())
+		client.LogError("Failed to serve: %s", request.String())
 	} else {
-		client.LogInfo(clientServedStr, request.String())
+		client.LogInfo("Served: %s", request.String())
 	}
 }
 
@@ -88,13 +88,10 @@ func handleDirectory(client *core.Client, file *os.File, p *core.Path) error {
 	// Slice to write
 	dirContents := make([]byte, 0)
 
-	// Escape the previous dir
-	dirSel := core.EscapePath(p.SelectorDir())
-
 	// Add directory heading, empty line and a back line
 	dirContents = append(dirContents, buildLine(typeInfo, "[ "+core.Hostname+p.Selector()+" ]", "TITLE", nullHost, nullPort)...)
 	dirContents = append(dirContents, buildInfoLine("")...)
-	dirContents = append(dirContents, buildLine(typeDirectory, "..", dirSel, core.Hostname, core.Port)...)
+	dirContents = append(dirContents, buildLine(typeDirectory, "..", p.Selector(), core.Hostname, core.Port)...)
 
 	// Scan directory and build lines
 	err = core.ScanDirectory(
diff --git a/gopher/string_constants.go b/gopher/string_constants.go
deleted file mode 100644
index e998ee9..0000000
--- a/gopher/string_constants.go
+++ /dev/null
@@ -1,30 +0,0 @@
-package gopher
-
-// Client error response strings
-const (
-	errorResponse400 = "400 Bad Request"
-	errorResponse401 = "401 Unauthorised"
-	errorResponse403 = "403 Forbidden"
-	errorResponse404 = "404 Not Found"
-	errorResponse408 = "408 Request Time-out"
-	errorResponse410 = "410 Gone"
-	errorResponse500 = "500 Internal Server Error"
-	errorResponse501 = "501 Not Implemented"
-	errorResponse503 = "503 Service Unavailable"
-)
-
-// Gopher specific error string constants
-const (
-	invalidGophermapErrStr  = "Invalid gophermap"
-	subgophermapIsDirErrStr = "Subgophermap path is dir"
-	subgophermapSizeErrStr  = "Subgophermap size too large"
-)
-
-// Log string constants
-const (
-	clientReadFailStr  = "Failed to read"
-	gopherRedirectStr  = "Redirecting to: %s"
-	invalidRequestStr  = "Invalid request: %s"
-	clientServeFailStr = "Failed to serve: %s"
-	clientServedStr    = "Served: %s"
-)