Quartus qsyn_cmd.cpp error while starting compilation on Ubuntu 13.04

Hey! I installed quartus 13.0sp1 on my Ubuntu 13.04 system and it seemed to work great until I tried to compile anything. After pressing the "Start compilation" button it hangs for a few seconds and then gives off this error:

Internal Error: Sub-system: QSYN, File: /quartus/synth/qsyn/qsyn_cmd.cpp, Line: 673
family_opt1 != 0
Stack Trace:
    0x22c4e: QSYN_FRAMEWORK::check_whether_families_are_same() const + 0x42e (quartus_map)
    0x28a34: QSYN_FRAMEWORK::initialize_databases() + 0xc44 (quartus_map)
    0x15443: qexe_standard_main(QEXE_FRAMEWORK*, QEXE_OPTION_DEFINITION const**, int, char const**) + 0x555 (comp_qexe)
    0x1c971: qsyn_main(int, char const**) + 0xb1 (quartus_map)
    0x23908: msg_main_thread(void*) + 0x18 (ccl_msg)
     0x5f9e: thr_final_wrapper + 0xe (ccl_thr)
    0x24625: msg_thread_wrapper(void* (*)(void*), void*) + 0x6c (ccl_msg)
    0x57aad: mem_thread_wrapper(void* (*)(void*), void*) + 0xdd (quartus_map)
     0xffd8: err_thread_wrapper(void* (*)(void*), void*) + 0x2a (ccl_err)
     0x63fa: thr_thread_wrapper + 0x2f (ccl_thr)
    0x36e9a: msg_exe_main(int, char const**, int (*)(int, char const**)) + 0xb7 (ccl_msg)
    0x18e1d: main + 0x3d (quartus_map)
    0x19935: __libc_start_main + 0xf5 (c.so.6)
End-trace
Quartus II 32-bit Version 13.0.0 Build 156 04/24/2013 SJ Web Edition

Edit: fixed missing line returns