The problem is that it is generating the correct PDF. I am puzzled.

This works:

//68000 is the correct render server port

Set st=obj.GenerateReport(filename,2,0,68000)

This works too:

Set st=obj.GenerateReport(filename,2,0,"ABCDEFG")

Thanks Eduard for your help. We will be contacting WRC then.

I'm going to test this (SetConnectionLimit).

Will this affect our own internal tasks?

If our Cache service account is running our daily tasks and we set this connection limit to let's say 5, will some tasks fail then?