File Manager hanging when rename strings contains quotation marks

If you try to rename a file with something that contains quotation marks (i.e., "), the operation will hang.

You won't be able to fix it by clicking on the Job Running cancellation button (if it's meant to be a button), and not even by stopping the array. You have to reboot.

Quotation marks and similar characters should be properly escaped or the web form should check for "illegal" characters it cannot handle.

(This was tested on 6.12.14)