[O] Code vanishes on export

[Vikas Rawal]

I have been having some strange behaviour with my orgmode files
containing R code. When I export the file (to html), the code vanishes
and is replaced by value that is calculated by the code. I obviously
do not want the code to be removed from my org file.

I did not have this problem earlier and it seems to have appeared
after a recent upgrade.

Could someone please help trace the problem.

Vikas