> I tried the upgrade process with my 1.8.0 data but it failed
> In fact, table lap does not seem to be altered and I still have a "trigger"
> column where it should be "laptrigger"

The "trigger" column does not exist in 1.8.0 so I suspect the data you
are upgrading has already been modified by an earlier 1.9.0-dev
version. This may be the same problem Arnd is having.

The upgrade scripts are only guaranteed to work smoothly on official
released versions. Usually upgrades between dev revisions should also
work smoothly but not if database changes have been reworked. In this
case the database had a column added with an invalid name so it was
renamed and so there is no upgrade script with knowledge of the
invalid state.

 - Nathan

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