A Bamboo web part or product displays this error on a page, or the Bamboo Web License Manager displays this error in Central Administration when a user tries to activate or check status of a web part:
OnLoad: The located assembly's manifest definition does not match the assembly reference. (Exception from HRESULT: 0x80131040)
This issue occurs when the Bamboo Web License Manager DLL is not loading properly.
This issue can also occur when the deployment of a web part/product was disrupted by an issue in the server environment (for example: deleting a web application to which a product was deployed). After deploying the solution(s) again, this error may occur.
To resolve this issue, you must recycle the Central Administration Application Pool (for the error in Web License Manager), or the content web Application pool (for an error on a product page), on each server in the farm that is running the Web Application service.