Hello,
Thank you for reaching out to us!
During my testing, I was able to successfully load SBSAR files published using the 2019.1 release in the latest version of Substance Player.
To investigate this issue further, please share the SBS file and its dependencies as you suggested. I have sent you a link to a restricted access OneDrive folder you can safely upload the files to.
To easily do this, go to the Explorer panel in Substance Designer, then right-click on the SBS package and select the Export with dependencies… option in the contextual menu. I recommend checking the Build Archive option in order to create a 7z archive file for simple transfer – it is similar to ZIP.
You may upload this archive to the OneDrive folder using the link sent to your email address.
Thank you for your time and help!
Best regards,
Luca