How to reproduce: 1. Don't attach any hardware device to the PC. 2. Start PV, demo is autoselected. 3. Load any *.sr file. The data of that file is displayed. 4. Select demo from the device dropdown. 5. Select the previously loaded file from the device drop-down. Now the data from the file is no longer being displayed (but it should).
Oops, duplicate. Closing. *** This bug has been marked as a duplicate of bug 462 ***