Hi Antti,
The problem lies with the timeout that is set when the VEE RPC Service is created. The source code is provided with the example (built in CVI). Open VEE.c and search for vrpcCreateService. The fourth parameter of this function is the timeout value , currently set to 120 seconds (2 minutes). Change this value to a desired number and rebuild the DLL. This should fix the problem. Note that there are several places in the code in which the vrpcCreateService function is called. You should change all of them. Hope this helps!
Bob