Here at NI I've had LabVIEW RT open for hours on end with no such issues. To further troubleshoot, some of the following pieces of information would be required:
- What version of LabVIEW RT?
- What are the specific requirements to see the behavior? You mentioned it happened when your program wasn't even running.
- Does it happen if you reboot your system, launch LabVIEW RT, and just leave it on the splash screen?
- Does it only happen once you target the RT side even if you don't open any VIs?
- Does it only happen once you have *downloaded* your code?
- Does it happen when you download *any* code, or just one particular application?
- Does it only happen after your code has run once, and then stops? If this is the case it could be an issue w
ith the user interface receiving a large amount of data from the RT side.
- Has any software been installed or uninstalled on the host computer or any other changes to it since yesterday, as you mentioned it worked before.