I had the Studio version of Fireworks. It worked really good. Now I have a trial version from Adobe. It's flaky as the dickens. I keep getting 'internal error occurred' and 'not enough memory' errors. I tried to call about it and warn them I might not subscribe to fireworks for that reason. But there's no phone support for their products. I guess I just have to hope they continue to work to take the bugs out of their stuff. On the other hand they seem to have a 'take-it-or-leave-it attitude.
The support for Fireworks CS5 was said to be extinct: no longer available directly from Adobe. I uninstalled, re-installed twice: the second time I removed all preferences. I now use Fireworks only when the radio for wi-fi is disabled: the issue?! I'm not sure, but it works wonderfully well again... Keeping the radio wi-fi disabled is a safety precaution; it seems the internal error has something to do with the faux browser scams floating the Inet. Otherwise: preferences was the issue; I did read the kill kill and it seemed somewhat logical up to a point. I'm cleaning out old files: I've only opened one that caused an 'internal error message within FW since I did the second re-install: the first one said succuss--internal error--the second one sad foul and yet the foul works perfect...
I do love the Adobe software: I'm not blaming it or Adobe but it seems the problem started when the setting online for Fireworks was changed when support was allegedly ended for CS5.