253339 - Remove old program files when installing on top of an existing installation

Status: RESOLVED FIXED

(Thunderbird :: Installer, defect)

Description

[Scott MacGregor]

When users upgraded from 0.6 to 0.7, we moved to a static build. This meant
there were alot of DLLS in 0.6 that were still in the installation directory
after installing 0.7 on top of it. This led to weird problems such as missing
XPCOM symbols, etc.

We can easily fix this by making the installer remove a set of files during the
installation process.

Comment 1

[Scott MacGregor]

Attachment: first cut at a fix

this list is so much longer than firefox's because we had releases that were
non static builds in the early days. So we have to clean all of those files up.

Comment 2

[Scott MacGregor]

fixed on the branch and trunk. I'll test this in tomorrow's installer build to
see if it really works when going from 0.6 to 0.8. 

Comment 3

[Scott MacGregor]

Attachment: fix that actually works

I needed to cleanup the xpt files as well.

Comment 4

[Scott MacGregor]

Attachment: delete profilemigration.dll

Ben found another dll I wasn't deleting.

Comment 5

[Scott MacGregor]

I checked in this latest patch to delete profilemigration.dll. Should be in the
08/27 builds.

Comment 6

[John Woodell]

Will it be safe to install on top of an old tbird installation?

Comment 7

[Scott MacGregor]

(In reply to comment #6)
> Will it be safe to install on top of an old tbird installation?

Yes it will be safe if you are using the windows installer now that this bug has
been fixed.