It is probably possible for you to see the variables, but you need to apply a patch, or set the debug mode in config.php (I think)
Look at this thread:
http://forum.x-cart.com/showthread.php?t=44543&highlight=debug
You can also choose to print the entire array with the smarty command:
{$product_options|@print_r}
Then you can see the variables that you need to access, and figure out why the code isn't working. Your version must refer to the options differently. I suspect it might not have the classtext part, maybe it is optiontext or something else in 4.1.11.