Alexa, Kiwamu, Patrick The EPICS variables for h1ecatx1 were all frozen/invalid. Logged into the machine. Checked the logs. Did not find anything obvious. Automatic updates were turned on. I turned them off. Made sure automatic updates were off on h1ecatc1 and h1ecaty1. One had them on, the other didn't (don't remember which). Restarted the h1ecatx1 computer. Ran through the 'Stop', 'Update from source' and 'Compile' scripts. Would not compile because of uncommitted changes. Ran an svn update and got updates for: TwinCAT/Source/Current/Interferometer/End/Plc1.pro TwinCAT/Source/Current/Interferometer/Corner/Plc1.exp TwinCAT/Source/Current/Interferometer/Corner/Plc1.pro Scripts/Configuration/L1ECATY1/SYS/L1EcatY1.tsm 'Compile' then worked. Ran 'Activate and run' and 'Restart EPICS database'. System restored.