I deleted the cache file, but the problem is still happening.
I'm running the following:
Windows 7 Professional with Service Pack 1
Dreamweaver CS4 - Version 10.0 Build 4117
Super Suite:
SecurityAssist -- 2.0.3
Site Import 3 -- 3.0.4
DataAssist 2 -- 2.0.8
Dynamic Dropdowns -- 2.7.5
eCart 5 -- 5.0.3
Eric Meyer's CSS SCULPTOR 3 -- 3.0.2
Pro Maps for Google -- 1.0.7
CSS Menu Writer 2 -- 2.0.5
Surveyor -- 1.0.8
Dynamic Web Charts -- 1.0.5
Jeffrey Zeldman's Web Standards Advisor -- 1.0.2
Theme-It -- 1.0.2
Site Sculptor -- 1.0.0
Framework Builder -- 1.0.1
Image Resizer -- 1.0.0
CSS Form Builder -- 2.0.0
Dynamic Connections -- 1.0.0
Form Toolkit -- 1.0.0
HTML Editor -- 3.0.2
PowerCMS Builder -- 1.0.1
Bing Search Toolkit -- 1.0.0
Validation Tooltips for Spry -- 1.0.1
CSS Button Styler -- 1.0.0
Social Media Toolkit -- 2.0.0
and
PalettePicker -- 1.0.5
Dreamweaver Tools for Google -- 2.0.4