I think we need a "stop Checkmate button"

I just tried to do a rather big backup with Synchronize ProX. (95G 6700 files)
The fact is that the "backup disk" has never been checked by Chekmate.
A lot of errors occurred

Here is a small part from Synchronize ProX log.


* An error occurred while writing a file.
File system I/O error.
Path: Sons XX:HR Wind_Gale_Force:HR_AMB003_WIND_GALE_FORCE_EXT:WIND GALE FORCE EXT in Wires Melrose 3 wind whistle MKH70.wav
* An error occurred while creating a temporary file.


* An error occurred while opening a file to be written.
The file was not found.
Path:
* An error occurred while creating a temporary file.
Current privileges do not allow the operation. Error # -35.

Three times I stopped the backup, do the copy of these file by hand with no issues.
I'm a Synchronize user for many years and never encounter those type of issues (in this case my files are simple media audio files) ......
So I suspected Checkmate to be the culprit but to stop it I was forced to uninstall it because of the lack of a Stop button.

Without Checkmate running the backup run smoothly .... any ideas?
Thanks in advance
JM