I don't know either. The installation shouldn't have affected anything.
Ok, try:
CLUAConsole:CreateCreature("WWBILLY")
This will create another instance of Billy... maybe he will work properly. Make sure you're just outside the Sea's Bounty though.
If that still doesn't work, then the following hopefully will.
Go inside the Sea's Bounty (the top floor)
Use the command above to create an instance of Billy inside.
Then use the following commands to set a couple of globals. This should continue the quest.
CLUAConsole:SetGlobal("WWHelpFindBoo","GLOBAL",10)
CLUAConsole:SetGlobal("WWBillySeen","GLOBAL",2)
If
that doesn't work, kill off the four thugs, Vivick, Sten, Eforf and Delag, who are hanging around the back of the inn. Make sure Minsc is in your party, and Billy should offer to lead you to a pet shop.
Otherwise, you're looking at having to go back to a saved game... but I don't get what happened. You can email the current, non-working savegame to me if you want (preferably one before you made any changes to the globals), and I can take a look at it. supercliffette / at / yahoo/ . com/ .au (remove slashes and spaces, etc)