Why is an Agent logging "HTTP Status Code #2" each time it fails to inventory?

Hi,

I've been looking everywhere but with no answer. Here are my logs:

==============================================================================
Starting OCS Inventory NG Agent on Thursday, April 20, 2017 12:18:07.
AGENT => Running OCS Inventory NG Agent Version 2.1.1.1
AGENT => Using OCS Inventory NG FrameWork Version 2.1.1.1
AGENT => Loading plug-in(s)
    DLL PLUGIN => Searching for Plug-in DLL(s) in folder <C:\Program Files\OCS Inventory Agent\plugins>
    DLL PLUGIN => 0 DLL Plug-in(s) succesfully loaded on 0 DLL(s) found
AGENT => Using network connection with Communication Server
    COM PROVIDER => Loading Communication Provider <C:\Program Files\OCS Inventory Agent\ComHTTP.dll>
AGENT => Using Communication Provider <OCS Inventory NG cURL Communication Provider> Version <2.1.1.1>
    AGENT => Sending getLabel request
    COM SERVER => Initializing cURL library for getFile
    COM SERVER => Using cURL without server authentication
    COM SERVER => Disabling cURL proxy support
    COM SERVER => Enabling cURL SSL server validation support using CA Bundle <C:\ProgramData\OCS Inventory NG\Agent\cacert.pem>
    COM SERVER => Sending fileGet request to URL <http://ocshostname/ocsinventory/deploy/label>
    COM SERVER => fileGet response received <HTTP Status Code #400>
    COM SERVER => Cleaning cURL library
    AGENT => Failed to retrieve Label <HTTP Status Code #400>
AGENT => Sending Prolog
    DID_CHECK => Read DeviceID <LL016-2017-04-20-11-37-56> and MACs <00:26:82:DC:76:E400:09:0F:FE:00:0100:26:82:DC:76:E41C:C1:DE:A5:E1:6E> in file <ocsinventory.dat>
    COM SERVER => Initializing cURL library for sendRequest
    COM SERVER => Using cURL without server authentication
    COM SERVER => Disabling cURL proxy support
    COM SERVER => Enabling cURL SSL server validation support using CA Bundle <C:\ProgramData\OCS Inventory NG\Agent\cacert.pem>
    COM SERVER => Sending HTTP Post request to URL <http://ocshostname/ocsinventory>
    COM SERVER => HTTP Post response received <HTTP Status Code #2>
    COM SERVER => Cleaning cURL library
ERROR *** AGENT => Failed to send Prolog <HTTP Status Code #2>
AGENT => Unloading communication provider
AGENT => Unloading plug-in(s)
AGENT => Execution duration: 00:00:01.

Maybe it's #2xx but somewhere, a function failed to concatenate the last two digits?