diff --git a/.github/workflows/linux-build.yml b/.github/workflows/linux-build.yml
index 47417d5..f6ebc89 100644
--- a/.github/workflows/linux-build.yml
+++ b/.github/workflows/linux-build.yml
@@ -29,12 +29,6 @@ jobs:
           - compiler: gcc
             configure: " --disable-c-writer --disable-c-writerchannel --disable-c-vfs"
             description: "no writer, writerchannel, vfs"
-          - compiler: gcc
-            configure: "--disable-c-writerchannel --disable-c-vfs"
-            description: "no writerchannel, vfs"
-          - compiler: gcc
-            configure: "--disable-c-vfs"
-            description: "no vfs"
     name: build (${{ matrix.compiler }}, ${{ matrix.description }})
     steps:
       - name: Checkout
diff --git a/configure b/configure
index cb52908..20fa538 100755
--- a/configure
+++ b/configure
@@ -9048,7 +9048,12 @@ else
     USECVFS="no"
 fi
 
-if test ${USECWRITER} = yes; then
+# c-writer / c-writerchan / c-vfs must be enabled together
+if test ${USECWRITER} = yes \
+    && test ${USECWRITERCHAN} = yes \
+    && test ${USECVFS} = yes
+then
+
     printf "%s\n" "#define COOKFS_USECWRITER 1" >>confdefs.h
 
     COOKFS_PKGCONFIG_USECWRITER=1
@@ -9087,15 +9092,7 @@ if test ${USECWRITER} = yes; then
 
 
 
-else
-    COOKFS_PKGCONFIG_USECWRITER=0
-    # c-vfs requires c-writer
-    USECVFS="no"
-    # c-writerchan requires c-writer
-    USECWRITERCHAN="no"
-fi
 
-if test ${USECWRITERCHAN} = yes; then
     printf "%s\n" "#define COOKFS_USECWRITERCHAN 1" >>confdefs.h
 
     COOKFS_PKGCONFIG_USECWRITERCHAN=1
@@ -9134,13 +9131,7 @@ if test ${USECWRITERCHAN} = yes; then
 
 
 
-else
-    COOKFS_PKGCONFIG_USECWRITERCHAN=0
-    # c-vfs requires c-writerchannel
-    USECVFS="no"
-fi
 
-if test ${USECVFS} = yes; then
     printf "%s\n" "#define COOKFS_USECVFS 1" >>confdefs.h
 
     COOKFS_PKGCONFIG_USECVFS=1
@@ -9179,7 +9170,10 @@ if test ${USECVFS} = yes; then
 
 
 
+
 else
+    COOKFS_PKGCONFIG_USECWRITER=0
+    COOKFS_PKGCONFIG_USECWRITERCHAN=0
     COOKFS_PKGCONFIG_USECVFS=0
 fi
 
diff --git a/configure.in b/configure.in
index f6d67a5..1505439 100644
--- a/configure.in
+++ b/configure.in
@@ -223,33 +223,27 @@ else
     USECVFS="no"
 fi
 
-if test ${USECWRITER} = yes; then
+# c-writer / c-writerchan / c-vfs must be enabled together
+if test ${USECWRITER} = yes \
+    && test ${USECWRITERCHAN} = yes \
+    && test ${USECVFS} = yes
+then
+
     AC_DEFINE(COOKFS_USECWRITER)
     COOKFS_PKGCONFIG_USECWRITER=1
     TEA_ADD_SOURCES([writer.c writerCmd.c])
-else
-    COOKFS_PKGCONFIG_USECWRITER=0
-    # c-vfs requires c-writer
-    USECVFS="no"
-    # c-writerchan requires c-writer
-    USECWRITERCHAN="no"
-fi
 
-if test ${USECWRITERCHAN} = yes; then
     AC_DEFINE(COOKFS_USECWRITERCHAN)
     COOKFS_PKGCONFIG_USECWRITERCHAN=1
     TEA_ADD_SOURCES([writerchannel.c writerchannelIO.c])
-else
-    COOKFS_PKGCONFIG_USECWRITERCHAN=0
-    # c-vfs requires c-writerchannel
-    USECVFS="no"
-fi
 
-if test ${USECVFS} = yes; then
     AC_DEFINE(COOKFS_USECVFS)
     COOKFS_PKGCONFIG_USECVFS=1
     TEA_ADD_SOURCES([vfsDriver.c vfsVfs.c vfs.c vfsCmd.c])
+
 else
+    COOKFS_PKGCONFIG_USECWRITER=0
+    COOKFS_PKGCONFIG_USECWRITERCHAN=0
     COOKFS_PKGCONFIG_USECVFS=0
 fi
 
diff --git a/generic/writer.c b/generic/writer.c
index 93ad091..d3d7a00 100644
--- a/generic/writer.c
+++ b/generic/writer.c
@@ -258,7 +258,8 @@ int Cookfs_WriterAddFile(Cookfs_Writer *w, Tcl_Obj *pathObj,
     // Check if a fatal error has occurred previously
     if (w->fatalError) {
         CookfsLog(printf("Cookfs_WriterAddFile: ERROR: writer in a fatal"
-            " error state"));
+            " error state: [%s]",
+            Tcl_GetString(Cookfs_WriterGetLastError(w))));
         return TCL_ERROR;
     }
 
@@ -960,6 +961,7 @@ generateSortKey: ; // empty statement
 fatalError:
 
 
+    CookfsLog(printf("Cookfs_WriterPurge: !!! SET FATAL ERROR STATE !!!"));
     w->fatalError = 1;
     result = TCL_ERROR;
 
diff --git a/generic/writerCmd.c b/generic/writerCmd.c
index 0920e96..9f5550d 100644
--- a/generic/writerCmd.c
+++ b/generic/writerCmd.c
@@ -8,7 +8,9 @@
 
 #include "cookfs.h"
 
-static Tcl_ObjCmdProc CookfsWriterCmd;
+// Creating a writer object from Tcl is not supported as for now
+// static Tcl_ObjCmdProc CookfsWriterCmd;
+
 static Tcl_ObjCmdProc CookfsWriterHandlerCmd;
 static Tcl_CmdDeleteProc CookfsWriterHandlerCmdDeleteProc;
 
@@ -16,12 +18,17 @@ int Cookfs_InitWriterCmd(Tcl_Interp *interp) {
 
     Tcl_CreateNamespace(interp, "::cookfs::c::writer", NULL, NULL);
 
+    // Creating a writer object from Tcl is not supported as for now
+
+    /*
     Tcl_CreateObjCommand(interp, "::cookfs::c::writer", CookfsWriterCmd,
         (ClientData) NULL, NULL);
 
     Tcl_CreateAlias(interp, "::cookfs::writer", interp, "::cookfs::c::writer",
         0, NULL);
 
+    */
+
     return TCL_OK;
 
 }
@@ -47,6 +54,8 @@ Tcl_Obj *CookfsGetWriterObjectCmd(Tcl_Interp *interp, Cookfs_Writer *w) {
     return rc;
 }
 
+// Creating a writer object from Tcl is not supported as for now
+/*
 static int CookfsWriterCmd(ClientData clientData, Tcl_Interp *interp,
     int objc, Tcl_Obj *const objv[])
 {
@@ -65,6 +74,7 @@ static int CookfsWriterCmd(ClientData clientData, Tcl_Interp *interp,
 
     return TCL_ERROR;
 }
+*/
 
 static void CookfsWriterHandlerCmdDeleteProc(ClientData clientData) {
     Cookfs_Writer *w = (Cookfs_Writer *)clientData;
@@ -72,7 +82,6 @@ static void CookfsWriterHandlerCmdDeleteProc(ClientData clientData) {
 }
 
 static Cookfs_WriterHandleCommandProc CookfsWriterHandleCommandGetbuf;
-
 // In headers:
 // Cookfs_WriterHandleCommandProc CookfsWriterHandleCommandWrite;
 
@@ -99,6 +108,8 @@ static int CookfsWriterHandlerCmd(ClientData clientData, Tcl_Interp *interp,
     if (Tcl_GetIndexFromObj(interp, objv[1], commands, "command", 0,
             &command) != TCL_OK)
     {
+        CookfsLog(printf("CookfsWriterHandlerCmd: ERROR: unknown command [%s]",
+            Tcl_GetString(objv[1])));
         return TCL_ERROR;
     }