Error when importing data

Regardless of the module, whenever I try to batch create, using data exported from other companies in Manager I get the following error:

16.3.74 (Desktop)
System.TypeLoadException: Could not load type 'LumenWorks.Framework.IO.Csv.CachedCsvReader' from assembly 'LumenWorks.Framework.IO, Version=, Culture=neutral, PublicKeyToken=5ad3ea2f85776344'.
  at HttpFramework.HttpApplication.ProcessRequest (HttpFramework.HttpRequest request) [0x00000] in :0 
  at ManagerServer.HttpApplication.ProcessRequest (HttpFramework.HttpRequest request) [0x00000] in :0 

Earlier I have had no problems when importing data.
Computer is MacBook Air with OSX 10.11.5 Beta.

The procedure is:
Open company
Select eg. Customers tab
Click export
Open exported file in LibreOffice
Mark and copy the data
Open new company
Select customers tab
Click Batch Create
Insert data
Click Next

It looks like LumenWorks.Framework.IO.dll file is missing in your package. Try to delete Manager from your computer and download new package from our website.