For consideration of geometrical imperfections, i want to transfer the first eigenmode of a buckle analysis to the model. For this purpose i have created a .fil file and would now like to import it into the model. But I always get the following error message:

Error in job Static: AN ERROR OCCURRED WHILE OPENING/READING THE FILE Y:\05_Stabbündelstützen\07_Simulation\05_Thermische_Simulationen\Buckling\Buckling_Static\buck.fil. MAKE SURE YOU SPECIFIED THE CORRECT FILENAME WITHOUT THE EXTENSION. FILENAMES ARE CASE SENSITIVE ON CASE SENSITIVE OPERATING SYSTEMS.
Job Static: Analysis Input File Processor aborted due to errors.
Error in job Static: Analysis Input File Processor exited with an error.
Job Static aborted due to errors.

to transfer the fil I have used the following keywords:

*IMPERFECTION, FILE=buck, Step=1

1,1.0

The file I want to import is called buck.fil. Does anyone know the problem and can help me?

Thank you very much!