The font used in the captcha image was not uploaded to the server.
When trying to load the font directly from your server I get a "File not found" error --> MOM_T___.TTF
Dreamweaver sometimes seems to have problems to ftp all necessary files. Try to upload your font "MOM_T___.TTF".
In case you get an error message, this workaround might help:
- Make a copy of "MOM_T___.TTF" (press CTRL + D) in DW file list.
- Rename "Copy_of_MOM_T___.TTF" to "MOM_T___.txt"
- Upload that file to the server (DW should not have a problem with a "fake" txt-file)
- On the remote server, change the file extension back to .TTF
The error message in DW (your screenshot) doesn't seem to be related to the missing captcha-font, however you should try to delete the DW-cache-file and reset your workspace.