diff --git a/ginext/preContext.go b/ginext/preContext.go
index c812545..660b374 100644
--- a/ginext/preContext.go
+++ b/ginext/preContext.go
@@ -2,8 +2,10 @@ package ginext
 
 import (
 	"context"
+	"fmt"
 	"github.com/gin-gonic/gin"
 	"github.com/gin-gonic/gin/binding"
+	"gogs.mikescher.com/BlackForestBytes/goext/exerr"
 	"gogs.mikescher.com/BlackForestBytes/goext/langext"
 	"runtime/debug"
 )
@@ -40,33 +42,55 @@ func (pctx *PreContext) Form(form any) *PreContext {
 func (pctx PreContext) Start() (*AppContext, *gin.Context, *HTTPResponse) {
 	if pctx.uri != nil {
 		if err := pctx.ginCtx.ShouldBindUri(pctx.uri); err != nil {
-			return nil, nil, langext.Ptr(APIError(pctx.ginCtx, commonApiErr.BindFailURI, "Failed to read uri", err))
+			err = exerr.Wrap(err, "Failed to read uri").
+				WithType(exerr.TypeBindFailURI).
+				Str("struct_type", fmt.Sprintf("%T", pctx.uri)).
+				Build()
+			return nil, nil, langext.Ptr(APIError(pctx.ginCtx, err))
 		}
 	}
 
 	if pctx.query != nil {
 		if err := pctx.ginCtx.ShouldBindQuery(pctx.query); err != nil {
-			return nil, nil, langext.Ptr(APIError(pctx.ginCtx, commonApiErr.BindFailQuery, "Failed to read query", err))
+			err = exerr.Wrap(err, "Failed to read query").
+				WithType(exerr.TypeBindFailQuery).
+				Str("struct_type", fmt.Sprintf("%T", pctx.query)).
+				Build()
+			return nil, nil, langext.Ptr(APIError(pctx.ginCtx, err))
 		}
 	}
 
 	if pctx.body != nil {
 		if pctx.ginCtx.ContentType() == "application/json" {
 			if err := pctx.ginCtx.ShouldBindJSON(pctx.body); err != nil {
-				return nil, nil, langext.Ptr(APIError(pctx.ginCtx, commonApiErr.BindFailJSON, "Failed to read body", err))
+				err = exerr.Wrap(err, "Failed to read json-body").
+					WithType(exerr.TypeBindFailJSON).
+					Str("struct_type", fmt.Sprintf("%T", pctx.body)).
+					Build()
+				return nil, nil, langext.Ptr(APIError(pctx.ginCtx, err))
 			}
 		} else {
-			return nil, nil, langext.Ptr(APIError(pctx.ginCtx, commonApiErr.BindFailJSON, "missing JSON body", nil))
+			err := exerr.New(exerr.TypeBindFailJSON, "missing JSON body").
+				Str("struct_type", fmt.Sprintf("%T", pctx.body)).
+				Build()
+			return nil, nil, langext.Ptr(APIError(pctx.ginCtx, err))
 		}
 	}
 
 	if pctx.form != nil {
 		if pctx.ginCtx.ContentType() == "multipart/form-data" {
 			if err := pctx.ginCtx.ShouldBindWith(pctx.form, binding.Form); err != nil {
-				return nil, nil, langext.Ptr(APIError(pctx.ginCtx, commonApiErr.BindFailFormData, "Failed to read multipart-form", err))
+				err = exerr.Wrap(err, "Failed to read multipart-form").
+					WithType(exerr.TypeBindFailFormData).
+					Str("struct_type", fmt.Sprintf("%T", pctx.form)).
+					Build()
+				return nil, nil, langext.Ptr(APIError(pctx.ginCtx, err))
 			}
 		} else {
-			return nil, nil, langext.Ptr(APIError(pctx.ginCtx, commonApiErr.BindFailJSON, "missing form body", nil))
+			err := exerr.New(exerr.TypeBindFailFormData, "missing form body").
+				Str("struct_type", fmt.Sprintf("%T", pctx.form)).
+				Build()
+			return nil, nil, langext.Ptr(APIError(pctx.ginCtx, err))
 		}
 	}
 
diff --git a/goextVersion.go b/goextVersion.go
index c44752d..60be185 100644
--- a/goextVersion.go
+++ b/goextVersion.go
@@ -1,5 +1,5 @@
 package goext
 
-const GoextVersion = "0.0.195"
+const GoextVersion = "0.0.196"
 
-const GoextVersionTimestamp = "2023-07-24T11:42:52+0200"
+const GoextVersionTimestamp = "2023-07-24T11:47:47+0200"