diff --git a/server/vissv2server/serviceMgr/curvelog.go b/server/vissv2server/serviceMgr/curvelog.go
index 0de0f821..22b4cb61 100644
--- a/server/vissv2server/serviceMgr/curvelog.go
+++ b/server/vissv2server/serviceMgr/curvelog.go
@@ -305,6 +305,9 @@ func analyzeSignalDimensions(paths []string, signalDimensionList *SignalDimensio
 		pathDimList[i].Id = -1
 		pathDimList[i].Populated = false
 	}
+	if signalDimensionList == nil {
+		return pathDimList
+	}
 	for i := 0; i < len(paths); i++ {
 		if is2dim(paths[i], 1, signalDimensionList.dim2List) == true {
 			for j := i + 1; j < len(paths); j++ {
diff --git a/server/vissv2server/serviceMgr/signaldimension.json b/server/vissv2server/serviceMgr/signaldimension.json
deleted file mode 100644
index 01cd2b76..00000000
--- a/server/vissv2server/serviceMgr/signaldimension.json
+++ /dev/null
@@ -1 +0,0 @@
-{"dim2":[{"path1":"Vehicle.CurrentLocation.Latitude", "path2":"Vehicle.CurrentLocation.Longitude"}], "dim3":[{"path1":"Vehicle.Acceleration.Lateral", "path2":"Vehicle.Acceleration.Longitudinal", "path3":"Vehicle.Acceleration.Vertical"}]}