Problems with Router OS Upgrade 2.9.51 to 3.7/3.9

Hi Guys
I have been using mikrotik and think it is a great problem.
Recently I wanted to do an upgrade from version 2.9.51 to 3.7 and I had the strangest problem. Everything worked except for PPTP I could create no tunnels whatsoever. I even reset the router to factory settings and tried again. I had No luck at all. Is this a documented bug ? Could someone pleaaassseee help me ?

Don’t know if help this help, but I found that if backup on OS2 used on OS3 always problems or upgrade from 2 to 3. Have to do manual clean install from scratch to be sure.

Hi There
My router OS currently runs on a Disk on chip module.
I did do complete factory reset put an IP on the box. created a ppp secret and tried to connect. Still it did not even makea connection. Any ideas ?