Can you attach a simple VI containing only the offending tab control?
(If the multicolor option is disabled, it typically means that you were using the tab control from the system palette. Could that be it?)
Aha! I never new there was a difference if I select a tab from one menu or another. I'm not a regular LabVIEW programmer and I guess in the beginning of this project I forgot where the tab container was located and luckily I found one somewhere, Is there a way to see whether objects are choosen from the dialog menu or another? And it also explains why it looks differently on the PC which connects to the experiment!
Many thanks! Mark
Whouw, a new world opens for me. Changed some more things to system objects. Look much better. Are there any disadvantages in using the more system objects over LabVIEW objects?