CEF Browser - what is wrong with my script

Sat Jul 29 18:44:19 EDT 2017

Hi,
i get the error 

stack "Untitled 1": execution error at line n/a (External handler execution error: creation failed) near "creation failed"

when executing the following script in ide

   local tBrowserId
   put revBrowserOpenCEF(the windowId of this stack, "http://www.livecode.com <http://www.livecode.com/>" ) into tBrowserId
   if tBrowserId is not an integer then
      answer "Failed to open browser"
   end if
   revBrowserSet tBrowserID, "rect" , the rect of graphic "rectangle"

Tried in LC 8.1.5 and LC 9 DP8.

I cannot see an error in the script, if i use revBrowserOpen instead of revBrowserOpenCeF then it works.

Am i missing something?

Regards
Matthias

Matthias Rebbe
+49 5741 310000
‌matthiasrebbe.eu <http://matthiasrebbe.eu/>‌