Internal Error fz#list

Getting this randomly but continuously with program just sitting idle.
WinSCP - Version 4.3.2 (Build 1201)
Windows Web Server 2008 R2

. 2011-03-22 14:25:41.291 Session upkeep
. 2011-03-22 14:25:41.806 Session upkeep
. 2011-03-22 14:25:42.321 Session upkeep
. 2011-03-22 14:25:42.836 Session upkeep
. 2011-03-22 14:25:43.350 Session upkeep
. 2011-03-22 14:25:43.865 Session upkeep
. 2011-03-22 14:25:44.380 Session upkeep
. 2011-03-22 14:25:44.895 Session upkeep
. 2011-03-22 14:25:45.410 Session upkeep
. 2011-03-22 14:25:45.924 Session upkeep
. 2011-03-22 14:25:46.439 Session upkeep
. 2011-03-22 14:25:46.954 Session upkeep
> 2011-03-22 14:25:46.954 TYPE I
< 2011-03-22 14:25:46.954 200 Type set to I
. 2011-03-22 14:25:46.954 Attempt to close connection due to fatal exception:
* 2011-03-22 14:25:46.970 Internal error fz#list (0010).
. 2011-03-22 14:25:46.970 Got reply 1004 to the command 1
* 2011-03-23 07:39:41.399 (ESshFatal) Internal error fz#list (0010).
. 2011-03-23 07:39:45.315 Getting current directory name.
. 2011-03-23 07:39:45.346 Disconnected from server