Answered Not able to ugrade 2.6.1 to 2.6.5

Amongst all this hacking issue I am trying to ugrade one site from 2.6.1 to 2.6.5 using the otherwise excellent upgradeMODX extra, however I am getting a message saying "No fault" and a link to return to MODX which takes me to the login page. I have cleared the cache, tried upgrading to lower versions first but always get the same response.

Any clues as to how to get past this issue would be much appreciated.

Thanks in advance for any input.

Update:

After trying a few more things, on the last attempt clicking on the "upgrade button" took me straight back to the manager and the "upgrade" button has disappeared with just the digit "1" displaying where the text in the upgrade box should be. I have unistalled and reinstalled it but still just have the "1" and no text or button...

Has anyone else experienced this, or any ideas how to solve this?