[Lazarus] Migrating from Laz 0.9.30 (fixes_0_9_30) to Laz 0.9.31 (trunk)

[Marcos Douglas]

What is the best way to migrating from Laz 0.9.30 (fixes_0_9_30) to
Laz 0.9.31 (trunk)?

My environment now is:
- WinXP
- FPC 2.4.5 (fixes_2_5)
- Laz 0.9.30 (fixes_0_9_30)
- Paths:
  c:\freepascal\compiler\2.4.5  (FPC)
  c:\freepascal\ide\laz\0.9.30  (that works)
  c:\freepascal\ide\laz\0.9.30-config  (--pcp=...
environmentoptions.xml, fpcdefines.xml,  compileroptions.xml, etc)
  c:\freepascal\ide\laz\0.9.31  (trunk... the new Laz)
  c:\freepascal\ide\laz\0.9.31-config  (a copy from 0.9.30-config...
but I replaced all 0.9.30 texts to 0.9.31 in all files)

I want to compile the Lazarus on trunk, but I want migrate my packages too.

So,
1. I got the sources
2. compiled the first time... everything ok.
3. close the IDE, copy 0.9.30-config to 0.9.31-config and replaced all
0.9.30 texts to 0.9.31 in all files
4. open IDE without errors.
5. build up + clean all using the main menu
6. IDE compile all files, creates the lazarus.new.exe and restart.
7. ERROR(?) I see the image in attachment.

What happend?
How I can migrate?

Thanks,
Marcos Douglas