FTP Connection Issue in Dreamweaver CS4

Question

I just reinstalled Windows 7 Home Premium 64 bit and of course had to reinstall Design Premium CS4. Up until now Dreamweaver CS4 (Version 10.0 Build 4117) has connected to ftp flawlessly, however ever since I reinstalled I have been receiving the "An FTP error occurred - cannot make connection to host. The remote host cannot be found" error message.
What I have tried so far:
I have double checked that my login information is correct
I have successfully logged in to the ftp server using another ftp client and through a browser
Through Dreamweaver I have tried using passive FTP, secure FTP, firewall and none of those settings make a difference.
I receive the error message whether I click "test" or try to connect through the files panel .
I have checked my firewall settings and Dreamweaver is an allowed program.
I don't have access to another ftp server to check if would work in that situation.
I have uninstalled and reinstalled both Dreamweaver and the entire suite.
Is there anything else that I need to do?
Thanks in advance for any help.

Answer 1

This is a maddening issue that's getting press in various forums, here and on Adobe's site, and all sorts of third party blogs, etc. I spent days wrestling with this with no luck, because in CS3, which I"ve been using for years under OS X, Extension Manager is broken (under Mountain Lion, at least). Installed CS4, CS5—nothing worked. The ""can't connect" error message appears instantly, suggesting that DW wasn't even trying to make the FTP connection, which led me to suspect Little Snitch or some other firewall issue, but this wasn't the case. I isolated login items, repaired permissions, booted in Safe Mode—all with no luck. Finally, I tried opening DW from a different user login and FTP connected. This, at least in my case, pointed to something in the user folder. I narrowed it down to the User/Library folder. Creating a new user and copying the Library folder over copied over the problem, as expected. New user was deleted, and I wen tinto the troublemaking User/Library folder to see what I could see. There were old files and folders there from previous installs, including CS3—speciifically in the User/Library/Application Support folder and, of course, in User/Library/Preferences. After deleting thiese, I found no further problems connecting via FTP in DW CS4. I presume that CS5 also would connect now, but I'm not keen to put it to the test. Under CS4, Extension Manager works fine, which is what I was looking to accomplish in upgrading from CS3. Moral of the story: Adobe CS installations do not like legacy files and folder either in User/Library/Application Support or User/Library/Preferences. Deleting these may work for you, too—at least it's another string to the troubleshooting bow, and this one can be a real bear. Good luck to all who have run into this.