IDL installation problem

hi, I am trying ti install IDL Student Edition 5.6. While the installation was done without any problem on SuSE9.0, SuSE9.2 there are difficulties on SuSE10. The following error message-window opens: The following error occured while installing the IDL Program Files tar file: base1.tz Continue with installation tar: Read 7168 bytes from - I don't read this message. Neither I can find what does it mean. Did somebody else experienced this too? oliver