How do I install a package 'TOPCOM'
Recently I have used the Sage Notebook for computing the triangulation of polytopes. To check the regularity of these triangulations, I need to install the package 'TOPCOM' in advance. But I can't install this software successfully. For example, if I command
then there is a technical error and a caution; Error: failed to download
My laptop is a Mac OS X Version 10.6.8. Could you tell me how to fix this problem?