Slam! Bamm! Thank you Nan.

>>I expect it is because class files are binaries, and the & command is inline, hence only works in the "interpreted" .prg files.. ie. & means "dont compile it because it will be different sometimes".. which in a file which is compiled (ie a class file) is illegal.
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>>.. maybe
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>Or, maybe not. Sorry, but that's total nonesense, and terribly wrong. It's on thing to speculate but in this case it would have been quite simple to check before posting.