Posted by Bill Schwab on Nov 23, 2000; 4:00am
URL: https://forum.world.st/4-0-some-possible-problems-tp3358241.html

Andy,

This glitch appears to have a happy ending, but, I got caught in a situation
where I was unable to save packages, and even unable to check for cyclic
prerequisites.  Ultimately, the problem was an ancient view resource that I
don't need, and was able to remove.  There was another view that I was able
to export from 3.06 and import into 4.0.  Finally, there was another view
that was having problems because of the changes in ActiveX hosting - no
points off for that one :)  This was more obvious than in the past because
of improvements in prerequisites detection.  At first, it looked like the
tree-based display was causing problems, but, I now think that it was simply
view conversions, some of which were bugs, some not.

Something caused Migrate some grief.  Most of the way through a package
load, it complained that the package in question was already loaded - it was
correct.  Perhaps something is seeing a dependency that was missed when the
migrate.txt file was written and is loading the package earlier than it
would have been otherwise.

Perhaps more serious, I've noticed a few strange things in the debugger.
The first sign of it was that a block temporary wasn't inspectable (unknown
symbol) when I felt it should have been; another temp was known but the
value was nil which clearly wasn't correct.  I've since seen a few cases in
which a variable is nil in one frame (walkback line anyway - hope I'm not
abusing terminology here) and has the correct value in the one above or
below it.

Have a good one,

Bill


--
Wilhelm K. Schwab, Ph.D.
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