Hi,
Correct me if I'm wrong, but I presume you are using a DPO/MSO/MDO5034 and not the TDS5034.
A fresh install of Windows might be worth considering if using LabView is important to you.
I would suggest trying
TekScope Utility. It should allow you to easily save waveform data manually or on trigger or timing events.
If it does not do what you need it to do, then you may want to try sending SCPI commands manually through
OpenChoice and see if the data you receive matches with what you'd expect. Then it's a simple matter of stringing those together into Python or some other language of your choice.
If you post your LabView program we might be able to provide more direct help on it.
I would also point to this
post that features several known working LabView remote control examples.