HELP!!! Extensions or messages will not install 1.2.1

[bsmith40]

I need to install 1.2.1 and am not sure if I know enough to do the manual upgrade. I need to move on to 1.2.2.
Serious issues with FedEx, UPS shipping modules in 1.2.0 and cannot get resolved.

Message section does not work and extension section gives me an error: 
Error: cannot to pack /home/dvelpcom/public_html/E-Store/admin/system/backup/abantecart_120.tar.gz

I see others have had this error when installing previous updates, none of the replies seem to help.

I moved from zencart to Abantecart and losing customers online. PLEASE HELP!!!

[yonghan]

Hi, why don't you use a clean install rather than doing upgrade? And backup your data first and then restore after done with the new install?