I believe this is not just limited to trying to install both versions at the same time. It seems to happen when trying to install or remove either package. Look at: https://bugs.launchpad.net/ubuntu/+source/fglrx-installer-updates/+bug/981490 https://bugs.launchpad.net/ubuntu/+source/fglrx-installer/+bug/983580
Maybe thread should be re-titled and those bugs marked duplicate?
I believe this is not just limited to trying to install both versions at the same time. It seems to happen when trying to install or remove either package. Look at: /bugs.launchpad .net/ubuntu/ +source/ fglrx-installer -updates/ +bug/981490 /bugs.launchpad .net/ubuntu/ +source/ fglrx-installer /+bug/983580
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Maybe thread should be re-titled and those bugs marked duplicate?