ALIAS listing decimated

I seem to have lost most of my aliases! Yesterday all was fine, today I have only six aliases left out of some 20-25 that I had. The remaining ones are these:
51
As you can see, some of these were modified by me, some not, but even the default ones like ZE for Zoom Extents and the like are all gone.
I had a look into the plist, under Aliaslist, and I can only find those that can be seen in the Rhino preferences.
I could try to retrieve the old plist, rename it and reinstall it following the wiki procedure, but is that the way forward?

Max.

Ugh. Seems like a bug. I did some testing today and I cannot seem to reproduce this issue on my machine.

I presume you updated to 5.5? Is that the case? Can you please send along the .plist file in question?

Have you also used the RhinoWIP for V6?

Hi Dan,
No, I decided to wait with updating to 5.5, I am still on 5.4. And no, I did not install RhinoWIP for V6, right now I have no intention to update to V6 since I am quite happy with V5 for Mac. It suits my purposes well, and the number of bugs/shortcomings does not hinder me much. I may change my mind in the future though.

About the plist, I threw it away and restored it from an earlier date (good old Time Machine), followed the wiki to activate it and everything is back to normal. I saved a copy of the faulty one:
com.mcneel.rhinoceros kopie.plist (189.8 KB)

Thanks @maxz for the background info. It helps us eliminate some possibilities. Odd this .plist went south. Thank goodness for Timemachine.