Have you checked with Topaz Labs to see if they have an update, or at least log an error report so they can fix it.
The save may be as stated or a permission issue. What is an example of a file name? (Copy and Paste best to exclude user errors.)
Have you updated CS6?
Have you tried disabling the Topaz plugins and running without them?
No, the licensing should have nothing to do with this.
the file will save as normal first time round but when you go to save it whilst working it then gives you the error saying it cant save due to invalid file name. so I cant work that out because it was valid first time, but not 2nd !
I went into properties and unchecked the plug in option and the same issue of random crashing.
Perhaps file is busy as Bridge or Windows may be reindexing. If you wait a few minutes will it let you save?
3rd party filters should be in preferences/plugins I believe.
>>I went into properties and unchecked the plug in option and the same issue of random crashing.
Um, that makes no sense.
What "plugin option"?
Did you disable the Topaz plugins so they would not load in Photoshop?
And have you checked with Topaz to see if they have a new version to fix the bugs in their plugins?