"Try installing just pharo-launcher (without :i386). The handling of 32bit packages within a 64bit environment was changed in ubuntu. I don't know the details, but I installed pharo-launcher in ubuntu 14.04 yesterday and it just works fine.

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If you can confirm, maybe the respective community page should be updated to reflect this change."

no idea how to install without i386

�sudo apt-get install pharo-launcher

just tells me that i386 pharolauncher is already installed. Note that I have Ubuntu 13 and not 14. So what applies for you may not for me or anyone that still uses UBUNTU 13.