Hi Christiaan,

I am pretty sure the ‘saving’ trouble is introduced by osx 10.13. I now have a 
mix of Apple workstations running osx 10.10.5 and osx 10.13.2
We did not update skim so we are running skim version 1.4.9 on these 
workstations.

For testing I use osx 10.10.5 and skim 1.4.33 (107) on Macbook pro

********

( crash upon closing window.  Have this only with skim 1.4.33 )

11-04-18 15:48:56,909 Skim[2197]: assertion failed: 14F2511: libxpc.dylib + 
62447 [5C829202-962E-3744-8B50-00D38CC88E84]: 0x89
11-04-18 15:48:57,517 Skim[2197]: plugin 
com.tresorit.mac.TresoritExtension.FinderExtension interrupted
11-04-18 15:48:57,518 Skim[2197]: Unable to setup extension context - error: 
Couldn’t communicate with a helper application.
11-04-18 15:49:13,015 Skim[2197]: failed to read unique key 
net_sourceforge_skim-app_unique_key for 0 fragments from property list.
11-04-18 15:51:15,435 com.apple.xpc.launchd[1]: 
(net.sourceforge.skim-app.skim.78416[2197]) Service exited due to signal: Abort 
trap: 6


from the crash report 

Process:               Skim [2124]
Path:                  /Applications/Skim.app/Contents/MacOS/Skim
Identifier:            net.sourceforge.skim-app.skim
Version:               1.4.33 (107)
Code Type:             X86-64 (Native)
Parent Process:        ??? [1]
Responsible:           Skim [2124]
User ID:               501

Date/Time:             2018-04-11 15:36:30.152 +0200
OS Version:            Mac OS X 10.10.5 (14F2511)
Report Version:        11
Anonymous UUID:        7573ADEE-0259-9F51-921C-3892AB41FEE2


Time Awake Since Boot: 20000 seconds

Crashed Thread:        0  Dispatch queue: com.apple.main-thread

Exception Type:        EXC_CRASH (SIGABRT)
Exception Codes:       0x0000000000000000, 0x0000000000000000

Application Specific Information:
Assertion failed: (r->shape != NULL), function assert_check_region, file 
Regions/CGRegion.c, line 28.

*******

For the not able to save issue.

When opening the document from within skim.

first message:                  Skim was not able to read the notes at 
/Volumes/entrepot/continuiteitsrapporten/test_skim/IWWJB_reports3.pdf. Failed 
to reassemble attribute value. Do you want to continue to open the PDF document 
anyway?
second message:                 Unable to read notes for 
/Volumes/entrepot/continuiteitsrapporten/test_skim/IWWJB_reports3.pdf, but a 
Skim notes file with the same name was found.  Do you want Skim to read the 
notes from this file?

Then file will save.

If

first message:                  Unable to read notes for 
/Volumes/entrepot/continuiteitsrapporten/test_skim/IWWJB_reports3.pdf, but a 
Skim notes file with the same name was found.  Do you want Skim to read the 
notes from this file?
try to save mesage:     The document “IWWJB_reports3.pdf” could not be saved .  

But also no crash when closing the window just the normal behaviour   "Do you 
want to save the changes made to the document “IWWJB_reports3.pdf”?

Then

If we do save as in skim, to save the file with other or same name.  The file 
is saved.

The console output reports an error open saving as:

11-04-18 16:09:15,799 Skim[2249]: Failed to remove the draft status extended 
attribute at: 
/Volumes/entrepot/continuiteitsrapporten/test_skim/IWWJB_reports3.pdf. Invalid 
argument
11-04-18 16:09:26,451 com.apple.xpc.launchd[1]: 
(net.sourceforge.skim-app.skim.78416[2249]) Service exited due to signal: 
Segmentation fault: 11

Document is saved.




ROB VAN HALTEREN
AV | IT System Engineer
Entrepotdok 66
NL-1018 AD Amsterdam
T: +31 20 530 9696
F: +31 20 530 9697
www.filmmore.eu <http://www.filmmore.eu/>


 <http://www.filmmore.eu/>
 <http://twitter.com/filmmore> <http://www.facebook.com/FilmmoreINT/>


 <http://www.linkedin.com/company/filmmore-amsterdam/>



> On 11 apr. 2018, at 15:23, Christiaan Hofman <cmhof...@gmail.com> wrote:
> 
> 
> 
>> On 11 Apr 2018, at 14:58, Rob van Halteren <r...@filmmore.nl 
>> <mailto:r...@filmmore.nl>> wrote:
>> 
>> Hello,
>> 
>> I have a strange more or less inconsistent problem saving my existing skim 
>> documents ( with external skim-notes file ) to my storage using Mac osx 
>> 10.10 and 10.13
>> It only happens when Skim opens a PDF file and a popup comes up saying that 
>> "external notes file is found”
>> After opening en editing the notes, The document can not be saved anymore to 
>> the storage.  But I can do "save as” even with the same filename to the 
>> storage.
>> 
>> This problem has come up quite recently. I have a lot of pdf’s with external 
>> notes on the same storage in the same directory.
>> These are no permission problems saving to this storage. 
>> The only thing this storage does is changing the UID and GID from the files 
>> so that many users can have acces without problems.
>> 
>> Until recently this was not a problem for skim.
>> 
>> For the newer files saved by skim I saw that there are x-attributes  saved 
>> with the file like.
>> 
>> xattr IWWJB_reports3.pdf 
>> com.apple.FinderInfo
>> net_sourceforge_skim-app_notes
>> net_sourceforge_skim-app_text_notes
>> net_sourceforge_skim-app_rtf_notes
>> net_sourceforge_skim-app_BFA1220A-C4DF-4170-816A-1BB5B27FE1C5-0
>> net_sourceforge_skim-app_569FFE23-53E0-4A03-AF35-6F76B9D00CC1-0
>> 
>> for the skim notes the look:
>> 
>> xattr IWWJB_reports3.skim 
>> com.apple.FinderInfo
>> 
>> If I remove these attributes, than I can save the file once.
>> 
>> My older skim files don’t have the ‘net_sourceforge_skim attributes.
>> 
>> this problem is not solved by the last release. 
>> This release makes it worse by crashing when the document is closed by 
>> clicking on the “red” window-closing button  ( mac osx 10.10.5 )
>> 
>> Regards,
>> 
>> Rob.
>> 
>> ROB VAN HALTEREN
>> AV | IT System Engineer
>> Entrepotdok 66
>> NL-1018 AD Amsterdam
>> T: +31 20 530 9696
>> F: +31 20 530 9697
>> www.filmmore.eu <http://www.filmmore.eu/>
>> 
>> <filmmore_png_11122012173811.png>
>> <imdb_11122012173800.png><blank_11122012173722.gif> 
>> <http://www.filmmore.eu/><twitter_11122012173841.jpg><blank_11122012173722.gif>
>>  
>> <http://twitter.com/filmmore><facebook_11122012173738.jpg><blank_11122012173722.gif>
>>  <http://www.facebook.com/FilmmoreINT/><linkedin_11122012173828.jpg>
>> 
>>  <http://www.linkedin.com/company/filmmore-amsterdam/>
> 
> 
> Skim has always saved these extended attributes. This is the way Skim saves 
> the note data.
> 
> Are you sure this also recently started on 10.10? That would be strange as 
> neither Skim nor 10.10 would have changed in this respect. As for 10.13, 
> perhaps Apple is making trouble due to the new file system they use on 10.13. 
> Could it be that your external file system has a very restrictive limit on 
> the length of external attributes?
> 
> Also, can you find more detailed error messages, perhaps from Console.app, 
> and also from the alert, about the failing saves? And perhaps the crash? 
> (This is rather hard on 10.13).
> 
> Christiaan
> 
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