Verification fails for large dictionaries in Android client v1.6.4

[cowbutt]

Large dictionaries (e.g. Wikipedia (en) 20130204-1, Wiktionary (en) 20110604-1) fail to verify using the built-in verification function of the 1.6.4 Android client on my rooted B&N Nook running latest 1.2.1 firmware. Connecting the device as mass storage and verifying the very same files using the 0.9.3 Linux desktop client works as expected and the files are verified as correct.