I'm using Windows 7.
In[1]:= SystemInformation["Small"]
Out[1]= {"Kernel" -> {"SystemID" -> "Windows-x86-64",
"ReleaseID" -> "10.1.0.0 (5292918, 2015032402)",
"CreationDate" ->
DateObject[{2015, 3, 24},
TimeObject[{11, 30, 37.}, TimeZone -> -4.], TimeZone -> -4.]},
"FrontEnd" -> {"OperatingSystem" -> "Windows",
"ReleaseID" -> "10.1.0.0 (5292918, 2015032301)",
"CreationDate" ->
DateObject[{2015, 3, 23},
TimeObject[{22, 46, 3.}, TimeZone -> -4.], TimeZone -> -4.]}}
I can paste all I want into other programs or earlier versions of Mathematica. As a workaround I paste into V9, recopy it from V9 and paste into V10.