diff --git a/commands/grid_transform.go b/commands/grid_transform.go
index 2dcd545a..568c5f3e 100644
--- a/commands/grid_transform.go
+++ b/commands/grid_transform.go
@@ -104,7 +104,7 @@ func gridTransformCmdF(cmd *cobra.Command, args []string) error {
 
 	err = slackTransformer.ExtractDirectory(zipReader)
 	if err != nil {
-		logger.Error("error extracting zip file", err)
+		logger.Error("error extracting zip file. error:", err)
 		return nil
 	}
 
diff --git a/services/slack_grid/extract.go b/services/slack_grid/extract.go
index e0d558f2..4faff13e 100644
--- a/services/slack_grid/extract.go
+++ b/services/slack_grid/extract.go
@@ -7,6 +7,7 @@ import (
 	"io/fs"
 	"os"
 	"path/filepath"
+	"strings"
 
 	"github.com/pkg/errors"
 )
@@ -72,7 +73,11 @@ func (t *BulkTransformer) ExtractDirectory(zipReader *zip.Reader) error {
 	totalFiles := len(zipReader.File)
 
 	for i, f := range zipReader.File {
-		fpath := filepath.Join(t.dirPath, f.Name)
+
+		// slack file conversations have a : in the name. So, "FC:123:123" would be valid. This simply removes the : from the name.
+		// currently, these imports are not supported by the slack grid importer so the files are not referenced later.
+		sanitizedFileName := strings.ReplaceAll(f.Name, ":", "")
+		fpath := filepath.Join(t.dirPath, sanitizedFileName)
 
 		if f.FileInfo().IsDir() {
 			// Make Folder