I'm using linked resources for the first time and in Affinity Designer 2.5.5 on Windows 11. Specifically, I use MATLAB to render a data plot as a vector pdf file (via MATLAB's exportgraphics command), which is then linked into the Affinity document.
If I turn Automatically update linked resources when modified externally in settings on, Affinity updates the pdf each time I render it from MATLAB, but it also spawns two identical message boxes saying "Failed to open file – <name of the file> – The file type is not supported.". However, the pdf is updated just fine.
The message boxes do not show up of I turn auto-updates off and update the file manually in Resource Manager. This makes me suspect Affinity Designer is already trying to read the file while MATLAB is still writing to it, leading to the errors?