I don't know what's going on with v3.53... as far as the changelog (and my memory) is concerned, absolutely nothing is different from v3.51. I radically altered a lot of the StormFront stuff between 3.50 and 3.51 though, and despite it running with no problems for literally days on my computer, people are having strange issues like the one you're talking about.
If there's nothing you want from the new-and-improved SF stuff, just go back to v3.50 for the time being.
http://lichproject.sourceforge.net/L...50-Install.exe
As for the sign of thought thing... change the message in "spell-list.txt" from your Lich scripts directory to whatever it is now. All the info for tracking magic effects is read from that text file.
... then email the changes you made to me.
I visualize a time when we will be to robots what dogs are to humans, and I'm rooting for the machines. -- Claude Shannon