What js file is the rule trying to load? Does the rule have any custom code? Is there a URL where we can view the error?
Yes, i load small JS with custom code.
I have PMd you for details/URL
I didn't recognize the domain of the request as one of Adobe's. My first suggestion would be to remove the custom script from the rule to see if you still receive the error. If it goes away, you know the reference to that resource it coming from the custom script. At that point, you may want to check with the developer of the custom script to understand why that reference is being made.
The only reason I can think of where the rule would work fine on testing but not in production is a difference in the rule. IE has something from your testing environment not been approved and published through to production.
thanks for the support - turns out the mistake was really stupid (of me, as well as of the product imho...) - Launch generates new folders (new ID) with updates instead of keeping at structure stable (as DTM did)
So the issue really was: i overlooked that the folder-name had changed and updated the files in the previous structure. So this is why requests of course 404d.
sorry for bothering & thanks for the swift reply
No worries! I'm glad you figured it out.