[galaxy-dev] problems with MACS peak calling tool

Hi all, We got the Galaxy installed locally in our cluster and most tools are working well. But for some reason the MACS peak calling tool is not working. Basically it runs very quickly (a few seconds) with empty bed file. When I try to download the html file (very small, just 377.0 bytes) I always get this error: "Unable to remove temporary library download archive and directory" Our Galaxy is installed on a Linux system (Linux 2.6.31.12 #16 SMP Sat Jun 19 11:23:12 EDT 2010 x86_64 x86_64 x86_64 GNU/Linux). Our another Galaxy instance on a Mac OS does not have such any problems with the MACS. Apparently I did not install the MACS correctly. Could anyone give me any clues about this? Your help will be greatly appreciated. Jack