Index: pym/portage.py
===================================================================
--- pym/portage.py	(revision 5756)
+++ pym/portage.py	(revision 5757)
@@ -6518,8 +6518,9 @@
 					mytbz2 = xpak.tbz2(full_path)
 					# For invalid packages, mycat could be None.
 					mycat = mytbz2.getfile("CATEGORY")
+					mypf = mytbz2.getfile("PF")
 					mypkg = myfile[:-5]
-					if not mycat:
+					if not mycat or not mypf:
 						#old-style or corrupt package
 						writemsg("!!! Invalid binary package: '%s'\n" % full_path,
 							noiselevel=-1)
@@ -6531,7 +6532,7 @@
 					mycat = mycat.strip()
 					if mycat != mydir and mydir != "All":
 						continue
-					if mypkg != mytbz2.getfile("PF").strip():
+					if mypkg != mypf.strip():
 						continue
 					mycpv = mycat + "/" + mypkg
 					if mycpv in pkg_paths: