Friday, May 15, 2015

Entity Framework Code First – LoadFrom Error


I have been playing with Visual Studio 2015 RC and Entity Framework Code First. In the processes of doing so I ran into this error.

Exception calling "LoadFrom" with "1" argument(s): Invalid URL…….

This started happening when I upgrade to version 6.1.3. At first I thought this was a file path issue as I also moved where my project was located. That was not it through. I found a couple similar issues doing some searching but the error message was a little different.

Visual Studio 2015 RC Entity Framework 6.1.3 Migrations Error

Code First Migrations StartUp Project Does Not Reference The Project Contains Migrations

The first error I got was about file length, but I had seen that in Visual Studio before so I just moved where my solution was located. Once I moved the location I got this new error about invalid URL.

The stackoverflow thread though did point me to a GitHub thread with good info on it. The thing that solved it for me was two things.

1- Downgrade to version 6.1.1

2 – Update the EntityFramework psm1 file with the contents of this file. Note: You can just replace the file. You have to open the file up and replace the contents. If not when you restart Visual Studio you will get a signing error.

3 – Restart Visual Studio.

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