Yes, there's some web_reg_* inside and others out.
Do you think that may be the reason? I'll to make sure none are inside and will get back here shortly.
Anyway, just to be more clear. The issue is with the calls that are outside, like exemplified by the code below:
web_concurrent_start(NULL); web_url("image.gif", "more", "parameters", LAST); web_url("print.css", "parameters", LAST); web_url("code.js", "parameters", LAST); web_concurrent_end(NULL); web_url("Example.jsp", "this one fails", LAST);