Most likely your monitor screen resolutions is not set to a supported level
Currently The ''Insert Sync On Bitmap'' feature is currently limited to the following screen resolutions:

- ''640 x 480''
- ''800 x 600''
- ''1024 x 768''
- ''1024 x 744''
- ''1280 x 1024''
- ''1600 x 1200''

To Correct the problem do the one following:

- Use one of the above screen resolutions when recording scripts,

OR,
- Modify previously recorded scripts by editing the ''default.cfg '' script configuration file located in the script
folder and changing the value of:

Window= x

e.g.
Window=1280 x 768

To

Window=1280 x 1024 Or any of the supported screen resolutions list above.

Then try to adding your Sync