Reinstall previous version: expired license

Greetings to all,

Because of known bugs in the last release a 64 bit for Linux I tried several times to reinstall previous versions of January 2014 and 2013 (32 bit) which worked fine.

Well, every time I've tried reinstalling, it goes fine but when I launch the program window appears: ' EXPIRED LICENSE ' and the DraftSight closes immediately.

Obviously I have tried deleting all files and directories (even hidden ones), dozens and dozens of times, but the result is always the same: I can not install older versions.

Ubuntu 14.10 64 bit - 8 GB Ram-ATI Radeon HD240 2Gb

Grazie for your answers and sorry for my english.

Felice