You have the following solutions :
* If you know an AR System guru, contact him
* Open a ticket on the BMC Support
You should install patch 23 and see if it still crashes or if you dont want to install the entire patch, just try the server binary (arservora if you are using oracle for example). Remember to rename the file to "arserverd" and set the permissions accordingly.
I would try to delete all containers, such as guides, applications, or packing lists.