Help with photoshop launch error.

An unexpected and unrecoverable problem has occurred. Photoshop will now exit.

Photoshop Elements 11 on a Mac 10.8.5

My scratch disks were full so photoshop could not open. I deleted some files and rebooted but ever since I get this error code. I don't think it is my system needing updating or anything as it was working fine before the scratch disk error.

I have limited IT skills and I don't know where to go for help. I have seen that others have downloaded crash reports before and been able to help them so I have attempted to do this. I urgently need photoshop for my work so I am a bit stuck.

I bought elements on a disk and have no idea where the disk is no so reluctant to reinstall.

Just hoping someone might be able to help or tell me where to get help.