I have a SQL Statement connects to Teradata & it takes about 10 - 15 min to run when reloaded in Qlikview Desktop, however the SQL Statements hangs when run under a Publisher task. I checked from Teradata using TeradataViewPoint, its responding, so something needs to be done from Publisher side. (Note: the same query is also used for other apps with different where conditions.. those are re-loading properly).
or for Win2003, C:\Documents and Settings\All Users\Application Data\QlikTech\Publisher\Qlikview Distribution Service\1\Log.
You should also be able to see the Tasklog in the QEMC by selecting the task in the Task view, click "Show Task Details" in upper right and then click "Log" tab.
Another place to look for clues is the windows event log on the reloading server. It may be that the driver is presenting a dialog box. In this case, the diaglog message will appear in the Windows Event Application log.