I lately experience a strange behaviour of the LabView block diagram, when I open the Block diagram there is always a "Active X Function palette" active. After I close it it appears suddenly after a time again...
Can somone tell me what is the cause for this strange behaviour ?
It's possible that your LabVIEW.ini file (in the LabVIEW installation directory) is corrupt. Try quitting LabVIEW, renaming the file and then restarting LabVIEW. It should recreate it from scratch.