This error pictured above occurs when trying to save a Visio file (project) to a OneDrive synced folder.
When System Integrator (SI) runs the drawing code "inside Visio", Visio returns a http path to the Visio file, instead of a local path. When the project file, (dtp) is not stored in a local path and includes a Visio file, SI does not have a method to read web path for the project data.
The only way to fix this is to change your local projects folder (Start>setup>control panel> project folder) to a D-Tools folder on your local machine, then create a symbolic link to a folder on your OneDrive account.
Our development team is actively working on a solution to this issue.
Should you need any further assistance, please contact us at support@d-toolshelp.com
Or open a support ticket at https://www.d-tools.com/support-ticket or start a Live Chat by navigating to http://d-tools.com and clicking on the blue chat icon at the bottom of the page.