I've been using Armory for a couple years now. I'm 'techie-light' so please bare with me & apologies if this has already been answered.
System: OS - Ubuntu 15.1 15Gb real memory 15Gb virtual memory
Initially I installed 0.94.1 on top of 0.93.1 using the Git clone + make + make install instructions.
That resulted in the Armory GUI showing a successful Wallet consistency check + successful Bitcoin Engine init; then the GUI turned grey and I got a program not responding message requiring a manual close which left Bitcoind running but no Armory process running. I then uninstalled Armory leaving the settings as was and re-installed.
Result: As above except that, instead of the GUI freezing, it simply disappears.
All looks fine in the log (to me anyway - ie no errors) until the last few lines as follows:
2016-04-22 10:44 (INFO) -- ArmoryQt.py:5812 - Dashboard switched to auto-InitSync
2016-04-22 10:44 (INFO) -- ArmoryQt.py:2498 - loadBlockchainIfNecessary
2016-04-22 10:44 (ERROR) -- ArmoryQt.py:1336 - 4 attempts to load blockchain failed. Remove mempool.bin.
2016-04-22 10:44 (ERROR) -- ArmoryQt.py:1341 - File mempool.bin does not exist. Nothing deleted.
2016-04-22 10:44 (INFO) -- ArmoryQt.py:2519 - Setting netmode: 1
2016-04-22 10:44 (INFO) -- ArmoryQt.py:5935 - Dashboard switched to "Scanning" mode
2016-04-22 10:44 (INFO) -- Networking.py:64 - Connection initiated. Start handshake
2016-04-22 10:44 (INFO) -- ArmoryQt.py:5935 - Dashboard switched to "Scanning" mode
2016-04-22 10:44 (INFO) -- Networking.py:155 - Received version message from peer:
2016-04-22 10:44 (INFO) -- Networking.py:156 - Version: 70012
2016-04-22 10:44 (INFO) -- Networking.py:157 - SubVersion: /Satoshi:0.12.0/
2016-04-22 10:44 (INFO) -- Networking.py:158 - TimeStamp: 1461318297
2016-04-22 10:44 (INFO) -- Networking.py:159 - StartHeight: 408421
2016-04-22 10:44 (INFO) -- Networking.py:341 - Handshake finished, connection open!
Any pointers much appreciated