>>I am running VFP 6 and on a line that just says "Append From Billtemp" I get an error Fatal Error: Exception code=C00000FD
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>>This program has run for a LONG time before and the file billtemp does exist.
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>>Any thouhts or suggestions????
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>Delete the foxuser file. Also, check for corruption in both tables. Try reindexing both tables.

And when reindexing, don't just use the reindex command, but do a DELETE TAG ALL and then regenerate the indexes. The reindex command can retain corruption in the index and that can be one of the causes of that error.