Differences between running in Unity Editor vs. standalone .exe?

Questions & Answers
1

I’m guessing this is just some configuration oddity I’m overlooking when I build but here’s the strange behavior I’m seeing:

I have a game that supports in-game chat via IRC. To connect to IRC the game is using the SmartIrc4net library here: GitHub - meebey/SmartIrc4net: IRC C# Library

Everything is coded and works fine when I run the game from within the Unity Editor. However, when I build and run the game as a standalone .exe none of the outgoing connections to IRC appear to happen. The game client never makes a call to the IRC server.

Is there some sort of network policy or sandboxing or something… that is different in the Unity Editor vs. an exe?

Thanks

EDIT: In the output_log I see the follow (note, I dont see these errors when running in the Unity editor)

This has something to do with the initialization of the IrcClient class in SmartIrc4net. Again… I dont understand why it works in the Editor and not in the exe.

ArgumentOutOfRangeException: Argument is out of range.

Parameter name: options
  at System.Text.RegularExpressions.Regex.validate_options (RegexOptions options) [0x00000] in <filename unknown>:0 

  at System.Text.RegularExpressions.Regex..ctor (System.String pattern, RegexOptions options) [0x00000] in <filename unknown>:0 

  at Meebey.SmartIrc4net.IrcClient..cctor () [0x00000] in <filename unknown>:0 
Rethrow as TypeInitializationException: An exception was thrown by the type initializer for Meebey.SmartIrc4net.IrcClient
  at IrcManager..cctor () [0x00000] in <filename unknown>:0 
Rethrow as TypeInitializationException: An exception was thrown by the type initializer for IrcManager

 
(Filename:  Line: -1)
2

I figured it out… to fixed it I had to open the Build Menu → Player Settings → Other Settings and change API Compatibility Level to .net 2.0 (instead of .net 2.0 subset).

Thanks to these two threads for leading the way to the solution:

“the problem occurs when you define AND initialize a variable that uses a reference that doesn’t exist yet - or hasn’t been initialized yet”

“change your .net framework to lower”