I recieve this error when I open certain sub vi's. The error ocurrs sporadically, but only when multiple vi's are open. (possible system memory problem?) The computer I am developing on is a Celeron 600MHz with 256MB RAM and I am using LabVIEW 6.1
Is there anything similar with the subVIs? In particular do they have any common front panel objects? That is the first thing I would look for. I don't know if this has anything to do with your computer or if it could be a corrupt control. This is actually the only time I have heard of such an error. A graph had become corrupt and trying to open the VI gave a panel.cpp error although it was a different line number.