Getting the following error from mongo shell when trying to examine the currentOps:

"Error: 16686 error converting js type to Utf8Value at src/mongo/shell/types.js:620"

Full stack:
2015-01-28T21:19:45.139+0000 Assertion: 16686:error converting js type to Utf8Value
2015-01-28T21:19:45.165+0000 0x869641 0x817749 0x7fb156 0x7cd662 0x7b38ec 0x7b78a4 0xb0edd4 0xb0ea5e 0xb879fe 0xa99855 0xa9a77d 0xa32edd06362
mongo(_ZN5mongo15printStackTraceERSo+0x21) [0x869641]
mongo(_ZN5mongo10logContextEPKc+0x159) [0x817749]
mongo(_ZN5mongo11msgassertedEiPKc+0xe6) [0x7fb156]
mongo(_ZN5mongo11toSTLStringERKN2v86HandleINS0_5ValueEEE+0x82) [0x7cd662]
mongo(_ZN5mongo7V8Scope16mongoToV8ElementERKNS_11BSONElementEb+0x142c) [0x7b38ec]
mongo() [0x7b78a4]
mongo(_ZN2v88internal8JSObject26GetPropertyWithInterceptorEPNS0_10JSReceiverEPNS0_6StringEP18PropertyAttributes+0x1e4) [0xb0edd4]
mongo(_ZN2v88internal6Object23GetPropertyWithReceiverEPS1_PNS0_6StringEP18PropertyAttributes+0x8e) [0xb0ea5e]
mongo(ZN2v88internal7Runtime17GetObjectPropertyEPNS0_7IsolateENS0_6HandleINS0_6ObjectEEES6+0x24e) [0xb879fe]
mongo(_ZN2v88internal11KeyedLoadIC4LoadENS0_16InlineCacheStateENS0_6HandleINS0_6ObjectEEES5_b+0x85) [0xa99855]
mongo(_ZN2v88internal16KeyedLoadIC_MissENS0_9ArgumentsEPNS0_7IsolateE+0x10d) [0xa9a77d]
[0xa32edd06362]
2015-01-28T21:19:45.166+0000 Error: 16686 error converting js type to Utf8Value at src/mongo/shell/types.js:620