I have recently bought WL 7 (having worked with WL 5 for a long time).
Now I want to do such a simple task like cutting a file and exporting it as MP3-File.
I have only one Plug-In inserted which is Ozone4 from Izotope.
Render Audio ==> Datatype ==> MP3 ==> Crash (reproducable)
I tried to save to a Network location. The Network works without any problems…
This kind of procedure is quite common, and does not lead to a problem. If what you do, works when the target is a drive on the network, but not your local hard drive, then double check your HD.
Other than that, try to narrow down the problem.
Then there must be something very specific on your Windows XP system, that causes the problem only at your place. But I can’t guess more without eg. a crash dump listing.
At this stage, I would recommend erasing the WaveLab settings:
C:\Documents and Settins[UserName]\AppData\Steinberg\WaveLab 7
Then restart WaveLab.
Other than that, I guess that updating to Windows 7 would solve the problem.