I had the problem (german:Die Internetseite ... konnte nicht ... Vorgang abgebrochen) with IE 7 on Vista, Joomla 1.5, editing a product category.
Went into the problem until strange behavior was confirmed:
Delete mootool.js call - problem is gone (which is no solution tho)
Inserted an alert(hallo) into the joomla template, then into virtuemart template, then in virtuemart header.php, directly before the menu is drawn. strange behavior: if one waits, say, 3 seconds befor hitting OK on the alert, the page loads fine!
Solution: insert a defer attribute in the script-tag where the menu is drawn (third-to-last line in header.php)like this:
<script language="JavaScript" type="text/javascript" defer="defer">
This should solve it one for all, even for adding products.
I will put this in the tracker as well, to speed things up.
[Edit time=few minutes later]
Well, didnt work for adding products. So i kept digging...and found this
http://support.microsoft.com/kb/927917/en-us. Please see the section APPLIES TO...M$ couldnt fix this for ages.
Now the solution: We have to move the menu drawing line to the very bottom of aour component, keeping the defer attribute. I did this by moving (
cut&paste) the 3 script lines to the bottom of admin.virtuemart.php.
At least now working: Edit product category and Add product
G'night.