This just happened to me after a package emerge....
Traceback (most recent call last):
File "/usr/bin/emerge", line 44, in <module>
retval = emerge_main()
File "/j/usr/lib/portage/pym/_emerge/main.py", line 1909, in emerge_main
trees, mtimedb, retval)
File "/j/usr/lib/portage/pym/_emerge/main.py", line 370, in post_emerge
infodirs, info_mtimes, retval)
File "/j/usr/lib/portage/pym/_emerge/main.py", line 164, in
chk_updated_info_files
"--dir-file=%s/dir %s/%s" % (EPREFIX, inforoot, inforoot, x))[1]
TypeError: not all arguments converted during string formatting
Alan.