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For some reason, Golly is completely failing to recognize Wolfram rules which have the digit 9 in them; if I try to set the rule to one of these, it just gives an error saying "The new rule is not valid in any algorithm." This means that it's impossible to run rules W90 through W98, as well as W190 through W198.

The bug seems to have been introduced in Golly 2.8, as the issue exists there but not in 2.7, and it's continuing to happen in Golly 3.0b3.

I'm on Windows 10, if that means anything.

Thanks for reporting. This will be fixed shortly.

Good to hear, thanks!

Much thanks for the bug report. Just managed to squeeze a fix into version 3.0, now available from Sourceforge.