Which keyboard do you have? 

There is a search bar on the top of the symbol list that allows you to filter the list.

There is already a mechanism that won't open a file again if the app crashes while opening at startup. So this shouldn't happen more than once.

This should work. Can you please send me a screenshot of your #Textastic folder and one theme file so I can try to reproduce the issue? Send it to support@textasticapp.com.

Thank you!

Weird. What happens when you try to delete the file - do you get an error message? 

Thanks, I'll consider it.