Can not open control file

[virgo]

A large app has run fine, until yesterday afternoon, there were 7 hits on the same report at the same time. <br>
<br>
Now, when I try to run the report (I have tried it from 3 machines and the server), I get the error 'Cannot open control file'. The title is Crystal Reports Runtime. All of the reports in this app are exe reports. <br>
<br>
The query is made. I have the correct data. However, the actual report will not work. And, it needs to work, yesterday.... <br>
<br>

 

[MalcolmW]

Excuse a few obvious suggestions that you probably have already tried...<br>
1) Does the report run from the designer? If not, the report file is probably corrupt and needs replacing.<br>
2) Have you tried deleting the reportname.crf and reportname.exe files, and recompiliing the report? <br>
<p>Malcolm Wynden<br><a href=mailto:wynden@island.dot.net>wynden@island.dot.net</a><br><a href= > </a><br>

 

[virgo]

I 'inherited' the Crystal application. It is a whole series of apps. <br>
<br>
I just recopied an old backup file.<br>
<br>
It worked.<br>
<br>
But, I would like to know why it blew up in the first place.

 

[MalcolmW]

Can you reproduce the problem by having 7 users call the same report at the same time? I have heard (although I can't vouch for the accuracy of this) that the CRPE can only queue 5 reports at a time, as well as being single threaded so it can only process one report at a time. If this is true, if the CRPE is processing one report, has another 5 in the queue, and then gets another report request (lucky number 7), maybe it makes a rather ungracious exit from the world, such as you have experienced.<br>
However, as the recommended location for the CRPE installation is on the local client, it seems unlikely this would be encountered normally. Or do you have the CRPE installed on a server? <p>Malcolm Wynden<br><a href=mailto:wynden@island.dot.net>wynden@island.dot.net</a><br><a href= > </a><br>