Error upgrading VM2 to VM3

[raunhar]

The VM 2.6.6 is currently installed on Joomla 2.5x . The client has selected a template whichis for Joomla 3.4
I installed Joomla 3.4 on a fresh installtion. Imported the VM 2.6x database to the new 3.4 installtion (through phpmyadmin).  Installed VM 3.0.9 .
Till here there was no problem.
Under VM, when I tried to update Tables  (using the TOOLS), the error shows up:
alterColumns alterKey not finished, please rise execution time and update tables again

compareUpdateTable alterKey not finished, please rise execution time and update tables again

Host provider is hostgator.

How do I go about upgrading VM