Macro too big?

[Murrgon]

I have a Send Email step that is triggered if my build fails. All of the compiler errors are saved in a macro. Before sending the email, I have it build an EmailText macro comprising of a bit of info at the top and the attached set of errors that occured. I then use this macro as the message content for the email. If there were a lot of errors however, the send email step fails. I get an error that looks like this:

Error at Line 1, Column 11 (Syntax error)
Code: Microsoft .NET Framework, Version 2.0.50727.42

Which isn't very informative. If I shrink the size of the EmailText macro, it works fine. I am using VBP version 5.7.

Thank you