Dreamweaver creates a cache file called WinFileCache-********.dat or MacFileCache-********.dat inside your personal Dreamweaver configuration folder (the asterisks represent a series of letters and numbers that might differ from computer to computer). This occasionally gets corrupted causing instability, unpredictable error messages, and even crashes.
To solve the problem, close Dreamweaver and delete WinFileCache-********.dat or MacFileCache-********.dat.
The location of the personal configuration folder depends on your operating system and version of Dreamweaver. For Dreamweaver CC, and CS4-6, it’s as follows:
In all cases, <username> is the name of your user account on the computer, C* is CC, CS4, CS5, CS5.5, or CS6, and <language> indicates the language of your operating system. The language is usually represented by two pairs of characters separated by an underscore, as in en_US (English), es_ES (Spanish), or fr_FR (French).
Earlier versions of Dreamweaver locate the personal configuration folder in a slightly different location. This is where it can be found in Dreamweaver CS3:
The personal configuration folder for Dreamweaver 8 and older is in a similar location, except you should replace "Adobe" with "Macromedia" and substitute the appropriate version of Dreamweaver in the path name.
The Dreamweaver configuration folders are hidden on Windows, so you need to enable the option to view hidden files and folders in order to locate them, as follows:
Once you turn on this option, hidden folders are displayed as dimmed icons to remind you to treat them with care.
Your personal Library folder is hidden in Mac OS X 10.7 (Lion) and later. To access it:
Sometimes, deleting the cache file is not sufficient, and you need to delete your personal configuration folder in its entirety. Alternatively, you can rename it so that Dreamweaver can create a new version.
WARNING: Do not confuse your personal configuration folder with the main configuration folder in Program Files in Windows or Applications on a Mac. You should never touch the main configuration folder unless you really know what you're doing.
Deleting your personal configuration folder might sound like a draconian measure, but it's nothing to worry about. Dreamweaver automatically creates a new configuration folder with all the default settings the next time you launch the program. Deleting the personal configuration folder does NOT affect your site definitions. They are stored elsewhere.
The only real disadvantage of deleting the folder is if you have extensively customized Dreamweaver, or if you have installed a lot of extensions. If you don't want to lose all your changes, simply rename the folder to something like configuration_old. Dreamweaver will still create a new configuration folder the next time you launch the program. You can then selectively copy individual files/folders from configuration_old to the new configuration folder. However, you should be aware that doing so might reintroduce the same problem that led you to delete or rename the folder in the first place. Sometimes, it's better to start with the defaults, and make changes only when you really need them.