Hi Hanno,
If you are using InstallMenuDimmerCallback(...) and entering some type of infinite loop, you may see this behavior. If you are not using this function, please provide a more detailed description of how to create a project where you see this behavior. Did this project show the behavior from the beginning? Was this a conversion of a CVI project? Did you use the NI Measurement Studio AppWizard to create the project?
If you can give me more information on the problem you are seeing, I may assist you further. This is not a problem that has been reported previously.
regards,
Eric
Eric Meyer
Applications Engineering
National Instruments