It would be really nice if you could provide me a fix (or at least if you could tell me which file is missing), so my libart package would work for you too. The reason is that i intend to upload the libart-package (together with the other libraries needed for Gnumeric and Gnumeric) to extras-devel soon, and you could (and should) use my version then anyway.
These regular crashes were an issue in the earlier phases of porting of Xournal 0.4.1, as documented in the related thread in these forums. It was quite a "nominalistic" problem, as there were two parameters which were to have the same value in order to let the program run undisturbed, but when they were different the program was silently axed by the system. Might be something similar? Just my 2 cents...
The program regularly closes/crashes without warning at this point. I'm really looking forward to a stable release. Yay!