What you're describing has been mentioned in CryptoPrevent's Q & A:
Q: My legitimate software isn’t working properly after applying the protection. What do I do?
A: Be CERTAIN you have the latest version of the app, which is getting better all the time at not blocking legitimate applications. If you had an outdated version, after update then re-apply the protection and restart, then re-test your app. If it still isn’t working, ensure you’ve done the whitelisting first, and reboot if new entries are added to the whitelist. If it still isn’t working, then you may need to temporarily undo protection when using/installing that app. If this is the case, I would appreciate you telling me what app isn’t working for you and if you can, the details on the app’s filename and where it is running from, maybe I can help alleviate the issue with a new version.