TinyMCE Errors after upgrade to 1.53

[pwg]

Hi,

After upgrading to 1.53 I’m having a number of issues with the TinyMCE (version 2,4,13) module.

If you try and add an image to the text, selecting the Browse icon in the Insert/edit image pop-up leads to an Internal Server Error.

Full copy of error below:
Internal Server Error
The server encountered an internal error or misconfiguration and was unable to complete your request.

Please contact the server administrator, webmaster@accesspr.com.au and inform them of the time the error occurred, and anything you might have done that may have caused the error.

More information about this error may be available in the server error log.

Additionally, a 404 Not Found error was encountered while trying to use an ErrorDocument to handle the request.



All was fine prior to the upgrade, permissions are still the same and I’m stumped as to what it could be.

I’ve re-uploaded the whole core and also modules but the problem remains.

Any ideas?

Thanks for any help.

Paul