2.4 GHz Intel Core 2 Duo
2GB 667 MHz DDR2 SDRAM
Mac OS X Version 10.5.6
Then InDesign was shut down. The SING folder was moved back into the Adobe folder and opened. Inside the SING folder are a pair of nested folders: Mark II > Datastore. The file SINGmeta.dat was trashed and the program restarted and worked properly. (Although for some reason a Sample Button library window was open?!)
The only difference between my earlier use of InDesign and current use was a transfer of the contents of a Mac G5 to a new Quad-Core Intel Xeon machine.
having spent several hours troubleshooting this, I hope this helps someone.
Don O'Shea