I have read the topics on this subject, and since I am encountering the same problems, I am posting my findings.
I have a new installed computer with XP Pro+SP1. I burn a CDR with Portable Firefox along with Apache (portable configuration of it), and PHP. My application is working fine using default browser installed on my computer like normal Firefox and IE.
When I launch portable firefox from CDR either automatically or by double clicking on the EXE, I get the now well famous message: "Firefox is already running, but is not responding. To open a new window, you must first close the existing Firefox process, or restart your system." Needless to say, that I did not change an inch of the config of firefox, nor the EXE name, nothing at all. I am using what has been packaged and extracted.
However, when I start from CDR, normal Firefox which is nested in a subdirectory of Portable Firefox, I have no problem at all. I tried to have the content of my CDR on my USB key, and "miraculously" Portable Firefox is working fine. Therefore, this led me to believe that we need to have a writable medium for Portable Firefox to be able to run.
Besides, from what I understand, there is Portable Firefox Live with works from a CDR. What are the differences and roadmap?
1. Is Portable Firefox running on READ-ONLY medium?
2. What are the consequences of me using the nested Firefox instead of Portable Firefox from my CDR?
3. Any comments, suggestions or work-arounds?
Thanks a lot for your help.