It presented itself as "TypeError: expected string or buffer".

Resolves: rhbz#728883
---
pyanaconda/storage/__init__.py | 4 ++++
1 files changed, 4 insertions(+), 0 deletions(-)

diff --git a/pyanaconda/storage/__init__.py b/pyanaconda/storage/__init__.py
index abfdb55..00ec25d 100644
--- a/pyanaconda/storage/__init__.py
+++ b/pyanaconda/storage/__init__.py
@@ -1521,6 +1521,10 @@ def findExistingRootDevices(anaconda, upgradeany=False):
# This likely isn't our product, so don't even count it as
# notUpgradable.
continue
+ if arch is None:
+ # we failed to determine the arch (for instance when there is a
+ # corrupted rpm database on the target system)
+ continue

if upgradeany or
anaconda.instClass.productUpgradable(arch, product, version):
--
1.7.6

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