We are investigating KompoZer for use in our Web Design SIG, as an alternative to NetObjects Fusion.
KompoZer is a freeware HTML editor which is the successor to Nvu, now maintained by the Mozilla Foundation (of Firefox fame).
Unfortunately, it runs foul of DEP – Data Execution Prevention.
DEP is a recent CPU innovation by Intel and AMD intended to prevent viruses from pushing arbitrary code onto the stack and executing it there. Most normal programs do not do this.
Malicious programs can thereby completely circumvent Anti-Virus code which only scans the static executable before running.
Microsoft allows you to 1) turn on DEP for all programs, 2) only for the Operating System, 3) turn it off for selected programs or 4) turn off DEP completely.
Microsoft recommend turning DEP off, if necessary, for only the most trusted programs. KompoZer may be trusted, but it still crashes even with DEP turned off.
Here is a very interesting blog article on this very topic, including some crash warning signs 🙂