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Appending Specific Groups Doesn't Work
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System Information
Windows 10
NVIDA GeForce GTX 980

Blender Version
Broken: 2.76b
Worked: 2.75a

Short description of error
When appending groups, certain groups will append, and certain groups will not append at all. No error message is displayed.

Exact steps for others to reproduce the error
Open blender
Shift+F1 to Append
Navigate to "Palm Tree (SERIES).blend"
Select "Group"
Select "Palm Tree Standard (spray\mist)" or "Palm Tree Swanky spray\mist"


These groups share a lot of elements, so I thought maybe it was the emitters, since other groups in this file append properly, but the "Palm Tree Royale" has the same emitters as the two groups that do not work and it appends in properly.
Linking those groups does not work either. But copying them and pasting them into a new file does.
My coworker has the same problem and he is running on Windows 7.

Event Timeline

RDP RDP (rdp) set Type to Bug.
RDP RDP (rdp) added a subscriber: RDP RDP (rdp).
RDP RDP (rdp) created this task.
RDP RDP (rdp) raised the priority of this task from to Needs Triage by Developer.
Bastien Montagne (mont29) triaged this task as Needs Information from User priority.

Can you please try the latest build from our buildbot? Here on linux tried with current master, and all three groups append OK (afaikt)…

Hi Bastien,

I am the aforementioned co-worker, and am familiar with the issue. Using the latest daily build does not fix the problem.

In that case I need a better (more precise) description of the issue, and a simpler example .blend file, because with what I have so far everything seems to work OK.

Unless this is again a windows-only issue, but I do not see really how this could be here.

Hmm, what operating system are you testing in? I can try and test on Mac OSX later tonight.

Ok, I was able to test on a Mac OSX El Captain, and everything worked fine. No issue on Mac OSX.
This same Mac computer was able to run windows 10 via VM Ware. On the same Mac computer, in Windows, the "Palm Tree Standard (spray\mist)" group failed to append in. This is the 3rd windows computer that showed the issue.

Sorry, I didn't see your first post. So it sounds like there was no issue on Linux. It appears that this is indeed a Windows-only issue.

Bastien Montagne (mont29) raised the priority of this task from Needs Information from User to Normal.Nov 24 2015, 4:23 PM

Well, that’s good and bad news… Good: looks indeed to be windows-specific. Bad: I have to go back to ugly VM again (hoping it will work with recent OGL specs raising even :/ ).

Thanks for checking and feedback.

Bastien Montagne (mont29) raised the priority of this task from Normal to Confirmed, Medium.Nov 24 2015, 5:22 PM

OK, issue confirmed on VM, investigating…

Ah… found the issue… You are using '/' in your group name - very very bad :P

Will try to see how to fix this, but afraid it won’t be that easy… :/

I did try to unlink the group, regroup it, and call it something else, but it still wouldn't work for me.

You have to rename groups in lib file (here on win VM after renaming Palm Tree Swanky (spray/mist) to Palm Tree Swanky (spray_mist) I can append it with no problem).

The thing is, we 'windowsify' paths by replacing / with \ on Windows… That’s why you should never use / or \ in blender names, can create troubles when handled as pathnames.

This used to work (2.72 for eg), theres no need to apply path functions on data-block names (BLI_cleanup_file in filelist_readjob_do).

small note did you know for windows file path names you could use / as well, its some kind of compatibilty mode since the Dos age.
You might not need to do such conversions.