the preferred embodiments of the present invention examples of which are illustrated in the accompanying drawings according to the exemplary embodiment a method system and computer program product for processing system errors caused by installation and or execution of software applications are provided according to one exemplary embodiment the installer applications are analyzed for potential errors the emulator reproduces a state of a computer system in order to trigger an application execution or installation error raised in this particular computer system state the emulator determines at least one error caused by the application execution installation conditions the expert system connected to the emulator generates at least one error handling scenario script for the error detected by the emulator an error identifier i e the conditions under which the error had occurred and at least one error handling processing scenario for a particular application are stored into the expert database the error processing module detects application execution errors on a computer system then the error processing module loads a corresponding error processing scenario from the expert database and executes the error processing scenario or script typically software applications are distributed in a compressed auto unpackable form the installation process includes a system test for.