Export As... does not work (at all!)

[wbrenna]

To PDF it produces a file but it is empty and gives

Error: PDF file is damaged - attempting to reconstruct xref table...

To PNG it crashes catastrophically

xournalpp: cairo-surface.c:637: cairo_surface_destroy: Assertion `((*&(&surface->ref_count)->ref_count) > 0)' failed.
Crash Handler::Crashed with signal 6
[bt] #9 /home/wilson/documents/Dropbox/misc/xournalpp/xournalpp_fedora/src/xournalpp(_ZN9ExportJob11freeSurfaceEi+0xb7) [0x80b91f7]
/home/wilson/xournalpp/src/control/jobs/ExportJob.cpp:110
[bt] #10 /home/wilson/documents/Dropbox/misc/xournalpp/xournalpp_fedora/src/xournalpp(_ZN9ExportJob3runEv+0x443) [0x80b9733]
/home/wilson/xournalpp/src/control/jobs/ExportJob.cpp:195
[bt] #11 /home/wilson/documents/Dropbox/misc/xournalpp/xournalpp_fedora/src/xournalpp(_ZN11BlockingJob7executeEv+0x9d) [0x80b88dd]
/home/wilson/xournalpp/src/control/jobs/BlockingJob.cpp:25
[bt] #12 /home/wilson/documents/Dropbox/misc/xournalpp/xournalpp_fedora/src/xournalpp(_ZN9Scheduler17jobThreadCallbackEPS_+0x135) [0x80be3d5]
/home/wilson/xournalpp/src/control/jobs/Scheduler.cpp:275

[wbrenna]

Update: the paths are pretty wonky and I have a partial fix right now, and it should be complete shortly. The PDF, SVG, and EPS work perfectly minus the path problems. The PNG creates OK but crashes with:
xournalpp: cairo-surface.c:930: cairo_surface_destroy: Assertion ((*&(&surface->ref_count)->ref_count) > 0)' failed.`

[bt] #8 /lib/libcairo.so.2(cairo_surface_destroy+0x11f) [0x4db5d36f] 
??:0
[bt] #9 ./xournalpp(_ZN9ExportJob11freeSurfaceEi+0xb3) [0x80c1f73]
/home/wilson/etc/xournalpp_run/src/control/jobs/ExportJob.cpp:112
[bt] #10 ./xournalpp(_ZN9ExportJob3runEv+0x446) [0x80c27a6]
/home/wilson/etc/xournalpp_run/src/control/jobs/ExportJob.cpp:184
[bt] #11 ./xournalpp(_ZN11BlockingJob7executeEv+0x9d) [0x80c1abd]

[wbrenna]

The reason the path problem exists, I think, is actually because Glade and GtkFileChooser don't play well together. The documentation is pretty poor on this.

[wbrenna]

I've fixed the PNG bug and the PDF bug. The GtkFileChooser bug is upstream - that's a known (though poorly documented) problem with bookmarks. I included a window that shows the current folder so that the user knows that it's being buggy.