Nothing particular to 8.51 here, but it happens to be what I am using. I have a browser interface to a timesheet application. A button saves the timesheet by calling an agent (the reason for this is that the timesheet is actually composed of multiple individual documents - it is not a simple save).
The agent’s name is “(SaveTimesheet)”, and its alias is "SaveTimesheet. It is called with a URL of the form “SaveTimesheet?OpenAgent&name:CN=Andrew Brew/OU=COR/OU=SYD/OU=AU/O=GoodmanFielder~week:2010,1,23~saveaction:save~lineitem:Asia Pacific-Fix,0,0,0,0,0,0,0”
Between one save (save A) and the next (save B) it suddenly stopped working. The agent log shows that it was last called when save A was carried out. The agent writes to a log database, also (agentlog.nsf) and it also shows no records since save A. I know that I did not change anything, since A and B were just a few seconds apart in the same browser session - the page was not reloaded in between. That the agent log shows when the agent was last run demonstrates that the agent has not changed since that time.
What could cause the agent, formerly working fine, to apparently become invisible to the calling URL?