uddeIM 2.6 could not install on Joomla! 1.7.3

When i install uddeIM 2.6 (2.5, 2.3) from Extension manager, i look file uploading error. I check it in Win32 host, Linux host. What can i do for install uddeIM ?
I install other com_* (other programmers, own-created), but this error display at first time.

Thanks.

I hear about this error also the first time. Maybe your server has a 2mb upload limit? Could you try to ftp the file and install it locally?

Thanks, already change. Question closed.