I am running a nxlog enterprise edition trial version now. although I set the bufferSize for my input module, but it seems doesnt take effect as I still get below errors:

2016-02-17 17:51:53 ERROR data size (1261963) is over the limit (65000), will be truncated
2016-02-17 17:53:41 ERROR data size (1271672) is over the limit (65000), will be truncated
2016-02-17 17:54:18 ERROR data size (687118) is over the limit (65000), will be truncated
2016-02-17 17:54:18 ERROR data size (687638) is over the limit (65000), will be truncated
2016-02-17 18:02:55 ERROR data size (689151) is over the limit (65000), will be truncated
2016-02-17 18:02:56 ERROR data size (689671) is over the limit (65000), will be truncated

what is the maximum limit for the buffersize I can set? as you can see I have lines can go up to 1.3M 

below is my conf. file:

Panic Soft
#NoFreeOnExit TRUE

define ROOT C:\Program Files (x86)\nxlog
define CERTDIR %ROOT%\cert
define CONFDIR %ROOT%\conf

StringLimit 10485760 
LogFile E:\logs\nxlog\nxlog.log
Moduledir %ROOT%\modules
CacheDir %ROOT%\data
Pidfile %ROOT%\data\nxlog.pid
SpoolDir %ROOT%\data

<Input beta2_SigmaSrv>
    Module    im_file
    File        '\\fswmesbeta2\E\MTAPPS\IS_Frontend\Sigma\SigmaSrv\beta\traces\SigmaSrv*POOL*.trc'   
    SavePos TRUE
    ReadFromLast TRUE
    BufferSize 1500000 

</Input>

<Input beta2_SigmaNonTrackout>
    Module    im_file
    File        '\\fswmesbeta2\E\MTAPPS\IS_Frontend\Sigma\SigmaNonTrackoutSrv\beta\traces\SigmaNonTrackoutSrv*POOL*.trc'   
    SavePos TRUE
    ReadFromLast TRUE
    BufferSize 1500000
</Input>

<Input beta2_SigmaDUSrv>
    Module    im_file
    File        '\\fswmesbeta2\E\MTAPPS\IS_Frontend\Sigma\SigmaDUSrv\beta\traces\SigmaDUSrv*POOL*.trc'   
    SavePos TRUE
    ReadFromLast TRUE
    BufferSize 1500000
</Input>

<Output prod02_out>
    Module    om_tcp
    Host    fslelkprod02
    Port    4500
</Output>

<Route 1>
    Path        beta2_SigmaSrv,beta2_SigmaNonTrackout,beta2_SigmaDUSrv => prod02_out
</Route>