how to deleting cache, or opening new project / home first when i open Ch ?

i opened an error file or something. and now when i open Ch, it always saying 

[ internal error code: (405861230:37 = 36) attempt to index a nil value ] and other two warning messages about error file, and CH keep closing after these messages.

i thought it will solved if i open new or other normal project, but even if i click my other ch files, Ch always opening my first error file first and keep closing.

i already solved this problem doing re-download CH,

but i wonder there is other way to solved this problem. like deleting cache, or opening new project or home first regardless of what I did before.

actually the function that previous work always opens first when i open CH is a little inconvenient for me because of the loading time.

Sorry if my Eng is wrong or awkward. and thank you for reading.