What exactly do you mean by "other template modefications"???

With some styles, you need to make a button.

Problem's still goin' on. What must we do?

i mean that thanks button didn't show on the template used by default, but into other installeted templates all work fine and I seen thanks button.

There are 2 reasons the button wouldn't show.
A) Templates are not up to date (template hooks)
B) You haven't uploaded the images in all the styles you are using. Different styles use different directories for their images. THe button uses the variable $stylevar[imgdir_button] used by each theme, so just upload it to your buttons directory of each theme and should work.

You mean the screen freezes when you are installing the product?
According to the instructions first upload all the files to the ftp of the site, and then when installing the product select YES on the Allow Overwrite option.

It would be helpful to know what you were doing when that error came up. For example removing or giving a thanks... who knows.

Thank for your answer.
About first one A) where can I check this and correct? I think problem on this...
B) no, because I didn't see thanks counter into the postbit for every user, also like I didn't see thanks button.

ps. sorry for my english

You fisrt need to have your forums updated to 3.6.7 (3.6.6 minimum) Then when you login to your admincp there will be a message on the top saying something like

Click on the link and it will take you to a menu with all the outdated templates.
For this hack you are interested on updating
postbit, postbit_legacy, navbar, and memberinfo
so click on "[View History]" on those templates, and you will be able to compare the changes between the templates.
You will have more yellow lines depending on how modified your template is, but you are looking for green and reds. and specially the ones called $template_hook_[var] or something like that. If you don't want to revert your template, you will have to add these hooks to your current template manually.

Once added the template hooks, this modification should work no problem ^^. In addition if you want to update all your templates, it is very useful to use the modification post of vbulletin here to determine the importance and the nature of the updates :)

can you tell us how?

I am having the same problem i searched and read the thread did the suggested things but its still happening

You need to have product template hook vb367 fix.zip installed. It is provided on the first post.
If you have it installed and still happens might be because you are not using 3.6.7. The patch is designed to work with 3.6.7 and stop working on 3.6.8

Realy thank You! It's was helpful! I use 3.6.5 template. Where here THANKS button :-)

I remake template from new one, install manuany all old hacks and template editing.
It's takes long time, but now work fine