Unable to load the 'main' template Error!

[Klabautermann]

Hello there,

I have a big problem here with my website. I have the actual versions of SMF and TP running and try now to install a gallery. Tried already Menalto Gallery, SMF Light Gallery and the Coppermine Gallery. But always the same problem; when I click on the link Gallery in my menu I get this error message: Unable to load main template!
Oh holy sh..t what have I done wrong?! How can I get this done? Please please I need help!

Heres the link to the website:

http://www.tiny-soldiers.com

[G6Cad]

To get help on other mods you will get the best support from where you got the mods.
This question should have an asnswer if you browse and use the search on simplemachines.org.
If you use the SMF gallery you can also seek help on smfhacks.com as the one that build on that gallery knows the code inside out.

From the little info you gave i can only assume that you have the wrong button code added to what ever theme you are working with.