[Lazarus] Trunk IDE won't display project's main form

[Mark Morgan Lloyd]

I'm in an uncomfortable situation where the last few weeks' worth of 
trunk won't display a project's main form (populated only with standard 
controls) and won't compile it to anything reliable (noting other 
discussion, it's got a background thread). I got here because of fixes 
to the SPARC code generation which propelled me onto FPC 2.7.1, and 
fixes to Lazarus's gdb interface. After investigation yesterday I'm 
fairly confident that this problem is not CPU-specific, the first part 
(form display) appears to be something to do with GTK2.

I've got two questions:

i)  If anybody thinks this is worth raising as a bug, what is the 
maximum amount of the project that I can attach as an example? I'm not 
confident that I can remove stuff from it using any Lazarus that can 
read and display it properly, but I presume that nobody'd want a project 
containing a dozen or so files.

ii) Allowing that the GUI-oriented stuff hasn't changed significantly in 
the program since it was on 0.9.30, how can I take the project and force 
it to be saved without any recently-introduced properties which now make 
reading unreliable on anything older than trunk?

-- 
Mark Morgan Lloyd
markMLl .AT. telemetry.co .DOT. uk

[Opinions above are the author's, not those of his employers or colleagues]