Hi,
I've encountered also the loop problem there must be a page in some language for 5. june which interwiki is corrupt. My bot was trying to get:
[[wikipedia:li:5_juni [[lt:Birželio_5]]
what looks to me as an error where the li: link misses the ending ]] and the bot tries to get the [[li:5_juni[[lt:Birželio_5]] article which he cannot reach :(
Would you be so kind and check your language version and also some other wikipedias and correct this if you find the problem.
Thank you for your help