NSIS Error in uninstaller

MSG · 22nd November 2012, 10:34

When I was playing around with the problem in this thread, I ran into something rather strange.

Code:

outfile "d:\test.exe"
page instfiles
UninstPage instfiles

section
writeuninstaller "d:\untest.exe"
sectionend

Section "Uninstall"
MessageBox MB_OK "Working"
SectionEnd

The installer works fine, but the generated uninstaller throws an NSIS Error ("Error launching installer"). Using NSIS 2.46 and NSIS 2.46-Unicode. Can anyone reproduce?

Edit: Moving untest.txt to a d:\subdir, the uninstaller works fine. This could suggest a permissions issue, but what could the uninstaller be trying to do that would lead to a CRC error?
Some details: The Authenticated Users group has everything except Full Control on d:\, while the Users group has only 'read & execute', 'list folder contents' and 'read' access. I'm logged in as a userlevel user.

Another thing I can imagine is a backslashes issue, something like trying and failing to access d:untest.exe.

Anders · 29th November 2012, 15:40

allowrootdirinstall true

MSG · 30th November 2012, 07:38

Indeed. I'm filing this one as a bug though, because the manual strongly suggests this command is only related to the directory page. In any case, this should not cause the uninstaller to fail launch.

Anders · 30th November 2012, 08:03

How will the uninstaller end up in the root if the user cannot install there? I'm thinking this is by design. (The uninstaller specific startup code checks the path on purpose)

MSG · 30th November 2012, 09:01

The problem isn't coming up with crazy installation scenarios where the uninstaller might end up in root. If I don't even have a directory page to begin with, and installation to a root proceeds just fine, how am I supposed to realize that uninstallation from a root is not possible without allowrootdirinstall? The problem is that the uninstaller doesn't throw any recognizable error, and fails to launch completely. If it's hardwired to disallow root uninstall, it should say that instead of 'NSIS Error'.

22nd November 2012, 10:34	#1
MSG Major Dude Join Date: Oct 2006 Posts: 1,892	NSIS Error in uninstaller When I was playing around with the problem in this thread, I ran into something rather strange. Code: outfile "d:\test.exe" page instfiles UninstPage instfiles section writeuninstaller "d:\untest.exe" sectionend Section "Uninstall" MessageBox MB_OK "Working" SectionEnd The installer works fine, but the generated uninstaller throws an NSIS Error ("Error launching installer"). Using NSIS 2.46 and NSIS 2.46-Unicode. Can anyone reproduce? Edit: Moving untest.txt to a d:\subdir, the uninstaller works fine. This could suggest a permissions issue, but what could the uninstaller be trying to do that would lead to a CRC error? Some details: The Authenticated Users group has everything except Full Control on d:\, while the Users group has only 'read & execute', 'list folder contents' and 'read' access. I'm logged in as a userlevel user. Another thing I can imagine is a backslashes issue, something like trying and failing to access d:untest.exe.

29th November 2012, 15:40	#2
Anders Moderator Join Date: Jun 2002 Location: ${NSISDIR} Posts: 5,442	allowrootdirinstall true IntOp $PostCount $PostCount + 1

30th November 2012, 08:03	#4
Anders Moderator Join Date: Jun 2002 Location: ${NSISDIR} Posts: 5,442	How will the uninstaller end up in the root if the user cannot install there? I'm thinking this is by design. (The uninstaller specific startup code checks the path on purpose) IntOp $PostCount $PostCount + 1

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search
Display Modes
Switch to Linear Mode Hybrid Mode Switch to Threaded Mode

30th November 2012, 07:38	#3
MSG Major Dude Join Date: Oct 2006 Posts: 1,892	Indeed. I'm filing this one as a bug though, because the manual strongly suggests this command is only related to the directory page. In any case, this should not cause the uninstaller to fail launch.

30th November 2012, 09:01	#5
MSG Major Dude Join Date: Oct 2006 Posts: 1,892	The problem isn't coming up with crazy installation scenarios where the uninstaller might end up in root. If I don't even have a directory page to begin with, and installation to a root proceeds just fine, how am I supposed to realize that uninstallation from a root is not possible without allowrootdirinstall? The problem is that the uninstaller doesn't throw any recognizable error, and fails to launch completely. If it's hardwired to disallow root uninstall, it should say that instead of 'NSIS Error'.