How can I fix this error

I get this error

Undefined index: brand in /home/fabema/public_html/vqmod/vqcache/vq2-catalog_view_theme_grebleen3_template_product_special.tpl on line 57
2013-01-16 23:38:43 - PHP Notice: Undefined index: upc in /home/fabema/public_html/vqmod/vqcache/vq2-catalog_view_theme_grebleen3_template_product_special.tpl on line 69
2013-01-16 23:38:43 - PHP Notice: Undefined index: stock in /home/fabema/public_html/vqmod/vqcache/vq2-catalog_view_theme_grebleen3_template_product_special.tpl on line 75

and also this one:


Undefined variable: entry_company in /home/fabema/public_html/vqmod/vqcache/vq2-catalog_view_theme_default_template_account_register.tpl on line 56
2013-01-17 8:07:47 - PHP Notice: Undefined variable: entry_company_id in /home/fabema/public_html/vqmod/vqcache/vq2-catalog_view_theme_default_template_account_register.tpl on line 74
2013-01-17 8:08:25 - PHP Notice: Undefined variable: entry_company in /home/fabema/public_html/vqmod/vqcache/vq2-catalog_view_theme_default_template_checkout_register.tpl on line 36
2013-01-17 8:08:25 - PHP Notice: Undefined variable: entry_company_id in /home/fabema/public_html/vqmod/vqcache/vq2-catalog_view_theme_default_template_checkout_register.tpl on line 55

can anyone help me with it?

I paste fresh new register.tpl files but still the error persists.

Thank you in advance

The error path show at vqmod/vqcache/
Most possibly the cause is one of your vQmod file.
You need to find which one modified register.tpl

How do I find that? What do I have to look for?

I fixed one of the problems...

I still can't find the solution for this error:
Undefined variable: entry_company in /home/fabema/public_html/vqmod/vqcache/vq2-catalog_view_theme_default_template_account_register.tpl on line 56
2013-01-17 8:07:47 - PHP Notice: Undefined variable: entry_company_id in /home/fabema/public_html/vqmod/vqcache/vq2-catalog_view_theme_default_template_account_register.tpl on line 74
2013-01-17 8:08:25 - PHP Notice: Undefined variable: entry_company in /home/fabema/public_html/vqmod/vqcache/vq2-catalog_view_theme_default_template_checkout_register.tpl on line 36
2013-01-17 8:08:25 - PHP Notice: Undefined variable: entry_company_id in /home/fabema/public_html/vqmod/vqcache/vq2-catalog_view_theme_default_template_checkout_register.tpl on line 55

I searched all the xml files in my vqmod, but can't find anything related with the error. Maybe I am doing something wrong. I need your help please...

Thank you