If it works on the mobile phone but not on the main computer then by guess would be your integrated with vbulletin and your server path to vbulletin is incorrect on the $vbpath line. Meaning your upgraded and replaced your config files and have bad paths etc. Your trying to load the vb
header footer and we can not find the vb
files because that path is wrong.
That would be my guess number 2 on our FAQ thread on vb vBulletin Installation/Integration Common Issues and Resolutions.