We'll respond shortly.
“Is there any library for Base64 encoding on the iPhone?”
A team was getting the below error numerous times while running tests. They managed to track it down to a libxml / Nokogiri load order problem. The errors go away if they require libxml before they require Nokogiri.
ruby(59005,0xa0797720) malloc: *** error for object 0x9586b80: incorrect checksum for freed object - object was probably modified after being freed. *** set a breakpoint in malloc_error_break to debug