Forum Discussion
Power Query Merge/Append "Expression.Error: We cannot convert the value "[Binary]" to type Binary."
So, I moved one of the excel files to the SharePoint where the other file was being stored and this error is not shown anymore.
From this, I'm assuming that its an issue (a compatibility issue of some kind) between the two SharePoint sites, as switching them solved the issue. Like I stated before, the privacy levels of both are set to 'Private' and the only difference that I could see is that in one SHarePoint site i'm a Member and in the other one, I'm the owner. Not sure if this is the issue.
So, work around 2 - Store the files within the same SharePoint site
Reason for the error? - Still a mystery
If the Privacy Level of both are set to "Private", then perhaps it's not allowing you to combine files from two different locations into the same source file. I would try changing the Privaly Levels to "Always Ingnore Privacy Levels".
--Nate