I have installed AWB 126.96.36.199 in Ubuntu 14.04 after installing Wine, Winetricks and .NET framework 3.5. Everything is working fine except only boxes are shown instead of Bengali fonts in the Make List panel and in the Options tab.
I started using Windows 10 about a month ago and faced this problem. In this meantime, just got my old Windows 7 system repaired and when I tried on that, it worked well. Then a user suggested me to check for fonts. I copied all the fonts (which come with Windows 7 and are missing in Windows 10) to my new laptop. Now, this problem is solved.