Custom template shouldn't be a problem. Also reinstalling vBSEO was unnecessary. If such thing happens during next vBET install please just override changed vBSEO files with their original content (from vBSEO package).
I cannot tell what exactly went wrong. It could be wrong vBSEO integration or something else.
Please make installation again. This time check how forum behaves after each step (so we will know what is the issue vBET or vBSEO integration). If it fails on one step - do not go to next one. So:
1. Made vBET installation and necessary configuration (do not set SEO links yet, do not change other options - only do the necessary stuff). Check does forum is working. Check does translation is working. If your forum is not working - disable vBET and let us know. If Admin CP is not working too - disable hooks globally, then disable vBET and enable hooks globally. Also let us know.
2. Set SEO links option and add vBET .htaccess rules. Check does forum and translations are working.
3. Made vBSEO integration. Check does forum and translations are working.
4. Change vBET options as you like (maybe you have issue with some specific configuration). Check does forum and translations are working.
As I wrote, at this moment I cannot tell what went wrong. But if you fallow our instructions and tell when it breaks we will be able to help more. Also - if it was some wrong integration (SEO links or vBSEO - so steps 2 or 3) and now it will be done right, then the issue is solved. We need more of your feedback here
Also please see this:
http://www.vbenterprisetranslator.co...faq.html#post8