Cannot run program \"/usr/bin/python\": [..] java.io.IOException: java.io.IOException: error=12, Cannot allocate memory

I received this error via the crash report dialog a while ago:

org.syncany.exceptions.InitializationException: java.io.IOException: Cannot run program \"/usr/bin/python\": java.io.IOException: error=12, Cannot allocate memory
       at org.syncany.gui.linux.LinuxNativeClient.startService(LinuxNativeClient.java:336)
       at org.syncany.gui.linux.LinuxNativeClient.init(LinuxNativeClient.java:86)
       at org.syncany.gui.tray.linux.LinuxTray.init(LinuxTray.java:51)
       at org.syncany.Application.initUI(Application.java:175)
       at org.syncany.Application.start(Application.java:105)
       at org.syncany.Syncany.start(Syncany.java:92)
       at org.syncany.Syncany.main(Syncany.java:49)
Caused by: java.io.IOException: Cannot run program \"/usr/bin/python\": java.io.IOException: error=12, Cannot allocate memory
       at java.lang.ProcessBuilder.start(ProcessBuilder.java:475)
       at org.syncany.gui.linux.LinuxNativeClient.startService(LinuxNativeClient.java:263)
       ... 6 more
Caused by: java.io.IOException: java.io.IOException: error=12, Cannot allocate memory
       at java.lang.UNIXProcess.<init>(UNIXProcess.java:164)
       at java.lang.ProcessImpl.start(ProcessImpl.java:81)
       at java.lang.ProcessBuilder.start(ProcessBuilder.java:468)
       ... 7 more

Although I am not sure how to fix this, the cause is obviously not enough available RAM. As an immediate reaction to this, I reduced the "minimum" RAM from 512 MB to 256 MB via Java's -Xms parameter.

If this bug occurs again, please let me know