Opens ok. As soon as try to drag an image onto another, it crashes.
Any suggestions? Have deleted and reinstalled, same problem every time.
Error report begins
Exception Type: EXC_BAD_ACCESS (SIGSEGV)
Exception Codes: KERN_INVALID_ADDRESS at 0x00000948e5894868
Exception Note: EXC_CORPSE_NOTIFY
Termination Signal: Segmentation fault: 11
Termination Reason: Namespace SIGNAL, Code 0xb
Terminating Process: exc handler 
Can you please try clearing your preferences once.
To do so, keep Cmd + Shift + Option keys pressed while launching Editor.
A dialog will pop up asking to delete settings file, say Yes.
Let us know if issue still persists.
thanks very much! All sorted.
I've had this same problem. I followed your instructions and seemed to have fixed the problem, but only for 1 day. Now it is doing it again. I repeated the steps but it still crashes. I'm using the trial version of PSE 18 on mac os High Sierra.
I've been having the same issue and clearing my preferences didn't work, is there anything else I could do?
I"ve still got the same problem even after doing the above
. I have it on my Element 15 and Lightroom 4, both of which are 64-bit compatible . I trashed my element 10 since that was only 32-bit.
I recently upgraded to High Sierra, installed 16GB memory, dumping files to increase room but I don't think that is the problem anymore.