Hi Chris,
Thanks for writing in our forums!
The error text you are providing is showing that the code that initializes the Add-In is failing, even the code that attemtps to write the error message to the log is failing. The very first thing the Add-In attempts is to create a folder under %APPDATA% where the MySQL for Excel settings file and the logs are going to be stored.
Maybe the code is failing to create the folder. Do you have administrator privileges in the computer you run MySQL for Excel??
Some things that can help pinpoint the issue are:
- Can you please check if the folder "%APPDATA%\Oracle\MySQL for Excel" exists?
- Please read the blog post in the link below, and do step 3 to see if you can get the error message displayed to you and if so share it in another reply.
http://blogs.msdn.com/b/haahmadi/archive/2010/05/26/my-vsto-add-in-does-not-load.aspx
If the creation of the folder is the problem, you can try as a workaround creating the folders yourself (although the creation of the settings and log files may bring further errors), and running MysQL for Excel.
Depending on these results we can see if we create a bug.
Best Regards.
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Javier Treviño
MySQL on Windows Team