Hi swabygw,
If you set this properties in code behind, need use \r\n, like
UploadAttachments1.ProgressTextTemplate = "line1 \r\n line2";
If you set this properties in the control, need use , like below
<CuteWebUI:UploadAttachments runat="server" ID="UploadAttachments1" InsertButtonID="BrowseButton"
ProgressTextTemplate="line1 line2">
</CuteWebUI:UploadAttachments>
Regards,
ken