I'll try to replicate - Jc thinks it may be fixed.

This seems to be fixed for me. The filename with parentheses is not accepted, but I was able to rename the output filename and correctly save and restore the volume.

I think this bug still exists in version 4.6.2. Find attached a small example:

Slicer_Bug3374_Example.zip (3,549,109 bytes) 2017-05-30 04:22

I can't replicate this. I was able to save the data from the original bug report.

When i tried loading the Slicer_Bug3374_Example scene the volume data would not load. There's an extra ".nrrd" at the end of the filename resulting in this error:

vtkITKArchetypeImageSeriesReader::ExecuteInformation: Archetype file /Users/pieper/tmp/Slicer_Bug3374_Example/Test.Volume.nrrd.nrrd does not exist.

I'm not sure how that go there, but if there's a reproducible way to make that happen then maybe it's a bug that should be reported separately.

Yes, to replicate the error do the following

1. Open slicer (New / clean scene)
2. Add a Volume with a dot inside the file name like the one in the example Test.Volume.nrrd
3. Save the scene
4. Close the scene
5. Try to load the scene again

The error in the scene file is:
<VolumeArchetypeStorage
id="vtkMRMLVolumeArchetypeStorageNode4" name="VolumeArchetypeStorage_3" hideFromEditors="true" selectable="true" selected="false" fileName="Test.Volume.nrrd.nrrd" useCompression="1" defaultWriteFileExtension="nrrd" readState="0" writeState="0" centerImage="0" singleFile="4" UseOrientationFromFile="1" ></VolumeArchetypeStorage>