Draftsight Ubuntu upgrade

I have tried to install the newest release of Draftsight.  It would not install due to a SendMail dependency.  I tried installing it and the other dependecies and now it says " Itmes cannot be installed or removed until the package is repaired. Do you want to repait it now?  I have chosen repair and cancel with no success.  Now my old version is not under graphics so I  can not even run it.  I am dead in the water.