Bug, which occured in c't a german newspaper magazine. Open Original-PPT-2010.pptx with LibO and save it --> Big size reduction. Open this file (from step above) in MS Office (2010) Eroor message 1.png occured. "Repair" "Abort". Click repair Eroor message 2.png occured. "Download" "Open" "Acort" Click Open Save this file (You will get kopie-saved.pptx) Open the original file and save it using MS Office. Nothing changed (original-saved.pptx) OS: Windows 7 x64 LibreOffice 3.6.1.2 Testcase: https://www.box.com/s/68o7qxc2dzh5pevran8r
Hm, I am not sure whether I understand what problem is reported here. I can open "Original-PPT-2010.pptx" with MS PPT Viewer. I can confirm that "Original-PPT-2010.pptx" saved from LibO as "Original-PPT-2010_savedfromlibo361.pptx" can not be opened by MS PPT Viewer (error message different from the ones in test kit), so the suspect that there might be a LibO bug is at least plausible. LibO and AOOo 3.4.1 open "Original-PPT-2010_savedfromlibo361.pptx" without problems. Comparing "Original-PPT-2010_savedfromlibo361.pptx" and "Original-PPT-2010.pptx" the main difference seems to be that the original containsa .png without any compression, while the png in "Original-PPT-2010_savedfromlibo361.pptx" is compressed. No idea whether that difference is part of the problem. Not a special 3.6.1 problem, I get the same errormessage for a .pptx saved from LibO 3.4.5. Saved from LibO 3.3.3 can be opened by PPT Viewer, but that's empty. I think someone with pptx knowledge will have to check this. @Florian: Is the test from c't available? I believe they will contribute a copy for us for internal use if you ask.
It might be problem I fixed recently in master. I saved the Original-PPT-2010.pptx from master LO and it is opening OK in MSO. Attaching the saved document. I will try to backport the pptx export fixes to 3-6 branch.
Created attachment 67031 [details] problematic presentation exported with master branch LO
Modified Version due to earliest tested version, target due to test results. No longer reproducible already with parallel installation of Master "LOdev 3.7.0.0.alpha0+ - ENGLISH UI / German Locale [Build ID: 6cad15d]" {tinderbox: @6, pull time 2012-09-03 23:08:07} on German WIN7 Home Premium (64bit) (installation without Base) @Radek: On Marketing list we are thinking a bout a short comment on <http://www.heise.de/ct/inhalt/2012/20/76/>. Can you help with a short expectation like "reason for the problem might have been ..." here in the bug?
The problem was in slide export, where timeline for transitions and animations is exported. It was probably caused by changes in some part of impress related to animations and transitions, where the internal data representation changed a bit and thus we exported empty child nodes list, which doesn't complain with the standard.
Can't reproduce anymore, tested using Windows 8.1 with LibreOffice Version: 4.3.0.0.alpha0+ Build ID: 8102d45911bf3c47ce7ee15d3db89b0024c3bff8 TinderBox: Win-x86@39, Branch:master, Time: 2013-12-29_09:34:00 and opened using MS Powerpoint 2010. Kind regards, Joren