Im not able to reproduce with Windows 7 and DW CS5 either
Just a note:
some of the extensions you have installed are either outdated or Discontinued
eCart 5.0.3 -> Replaced by 5.0.7
Surveyor -> Discontinued
Bind Search -> The Bing v1 service is no longer available, it was replaced by Bing v2 which is now a paid for service
Theme-It -> this conflicts with Them-It in DE and DB
WebStandards -> Discontinued
Photo Assist -> Discontinued / not compatible with DW CS5
uninstall the discontinued extensions, update eCart, then uninstall and reinstall Data Bridge