Hello, @AdamABCS.
Thanks for sharing the solution you've performed in order to resolve the issue. I have additional steps to try, so you'll be able to work within QuickBooks without it crashing.
You can start by opening a sample company file. Here's how:
1. From the No Company Open window, select Open a sample file.
2. Select any sample file on the list.
Once done, import the IIF file to QuickBooks. If you didn't encounter any issues, log back into your company file and run the Verify and Rebuild Data Utility Tool.
Doing so will help resolve any data damage. To do that, follow the steps below:
Rebuild Data:
1. Go to the File menu.
2. Choose Utilities, then select Rebuild Data.
3. Select OK on the QuickBooks Information window.
4. Follow the prompt to save a backup.
5. When you see Rebuild has completed, click OK.
Verify Data:
1. Go to the File menu.
2. Choose Utilities, then select Verify Data.
3. If you see QuickBooks detected no problem with your data, click OK. You can continue using the company file.
4. If Verify finds an issue with your data, you’ll be prompted to Rebuild Now or View Errors.
5. Select Close.
Check out the following article for more information: Resolve data damage on your company file.
That should do it. Please give this a try and let me know how it goes. If you need additional assistance working with QuickBooks, leave a reply below. I'll be here to help you out. Thanks for dropping by and take care!
