Moved opencart now cannot login, problem with vqmod

Hi apologies if this is already discussed somewhere else, I couldnt find it.
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Version 1.5.1.3
Was working in a subdirectory
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I have just moved opencart to root of the website now i get this error and cannot login to the admin login:

Notice: Error: Could not load model catalog/review! in 'sitename'/vqmod/vqcache/vq2-system_engine_loader.php on line 39

Line 39 is this:
trigger_error('Error: Could not load model ' . $model . '!');

I have tried deleting vqmod and that broke it, then tried deleting vqmod and uploading a different version - got the same error

Anybody got any ideas?

Thank you

Do you update the site path on condig.php when moving your site?

Hi qahar

if you mean config.php and admin/config.php

then yes I did

I am developing opencart with a sub domain and will like to also know how to move main page thanks

Still no joy with this, I have backed up the db and restored it to another and the same error happens.

Anybody got any ideas? I cant log into the admin side of the site to do anything.

Is there a way around this so I can get into the admin bit?