Importing v1.8 into old v1.7 project gives errors

[unitycoder]

Assets/PointCloudTools/Common/Scripts/Helpers/PeekHeader.cs(11,23): error CS0246: The type or namespace name `PeekHeaderData' could not be found. Are you missing a using directive or an assembly reference?

[unitycoder]

Solution:
Deleting "PeekHeaderData.cs" before importing the package seems to work.
(or after you get this error message, delete the file, re-import the file from package)