You can try resetting the application to its original state by deleting all of the configuration stored in the registry.
I wouldn't recommend doing this if you haven't ever edited the registry before but the keys are stored in HKEY_CURRENT_USER\Software\SLR\SLR
You can delete this folder.
We've seen endless loading before but it looks like you've identified a new cause. We'll have to investigate. If you do clear the keys from the registry please let me know whether or not it works for you.