I downloaded the release 99-04-22 and extracted the ZIP-Archive in "C:\Temp\Mozilla". I had installed the MS IE 5.0 German and Netscape Communicator 4.51 German Enterprise Edition. Everytime I ran apprunner.exe I got an general protection fault by "apprunner.exe". Viewer.exe of the Mozilla package did so, too. Even as I de-installed Netscape Communicator 4.51 I got the same error. As I ran Mozilla "apprunner.exe" on another Win98 machine, which was fresh formatted and installed Mozilla was running (not perfect, but it ran). Now I wonder if my problem has to do with the IE 5.0 or with rests of Netscape Communicator. Hope, you'll get this bug !!!
Resolved as WORKSFORME. I run Mozilla with both 4.51 and IE 5 installed with no problems. Perhaps there's something unual about your machine configuration?
Moving from Apprunner to Other component temporarily whilst don and I set proper component. Apprunner component will be retired/deleted shortly.