I am trying to use the multlog module in order to start ingesting a custom log:

I have the following regex: \^(\d{2}|\d).(\d{2}|\d).(\d{4})\s(\d\d|\d):(\d\d|\d):(\d\d|\d)\s(AM|PM).\[(.*)\](.*) 

This works in a regex test; however I cannot get it to work with the log file that looks something like this

9/10/2015 11:29:16 AM [0-3-1-SecondaryPortStatus.cs-17] GetStatus for IP: 192.168.0.231 on port: 5016
9/10/2015 11:29:16 AM [0-3-1-SecondaryPortStatus.cs-47] <TRANSACTION>
<FUNCTION_TYPE>SECONDARYPORT</FUNCTION_TYPE>
<COMMAND>STATUS</COMMAND>
<MAC_LABEL>P_061</MAC_LABEL>
<MAC>az4FMuLbvrPz720bBeKWz3c+zBh6MsKVo4nJEW96B04=</MAC>
<COUNTER>217</COUNTER>
</TRANSACTION>
9/10/2015 11:29:16 AM [0-3-1-SecondaryPortStatus.cs-57] <RESPONSE>
<RESPONSE_TEXT>Operation SUCCESSFUL</RESPONSE_TEXT>
<RESULT>OK</RESULT>
<RESULT_CODE>-1</RESULT_CODE>
<TERMINATION_STATUS>SUCCESS</TERMINATION_STATUS>
<COUNTER>217</COUNTER>
<SECONDARY_DATA>10</SECONDARY_DATA>
<SERIAL_NUMBER>285498613</SERIAL_NUMBER>
</RESPONSE>
9/10/2015 11:29:16 AM [0-1-1-LandingPage.xaml.cs-49] POS opened

However when running the nxlog.conf for this I am getting the following error 

2015-09-15 08:00:43 ERROR couldn't parse expression at line 12, character 13 in C:\Program Files (x86)\nxlog\conf\nxlog.conf; invalid character: '\'

I am unsure what i need to do in order to get this correct; does anyone have any insight or resources I should further explore. Is there a REGEX specific doc for NXLOG?