Oracle Database Discussions

I have installed 10g Express edition. I am taking a class and have a book, which came with Oracle Developer Suite 10g. I have installed the software. I am trying to follow the book and when I try to open a form, location.fmb file I receive an error message.

SysFader: iexplore.exe – Application Error
The instructions at “0x0504e348” referenced memory at ‘0x000000c”. The memory could not be “read’.

I am not sure the Jinitiator is the cause of the error but that was the last piece of software that was installed. I have look all over the Web and maybe I am not looking or searching correctly but the only thing I can find that seems reasonable was about the Jinitiator. I have downloaded what seems to be a later version, 1.3.1.29. The version that installed during the opening of the form was 1.3.1.22. For some reason I am unable to get the program to use the new Jinitiator which I installed. I did uninstall the older version, I did start OC4J, I did login. The program still wants to install the older version. Not sure where to go from here. Any advise would be appreciated.