I get this same error "Error loading data: Incorrect Speccy data file" after File | Load Snapshot...
It does not matter whether I attempt the Load Snapshot on the same or a different PC to the one where the snapshot was created.
It happens for many but not all of the PCs I have created snapshots on. Both XP and Vista.
Importantly, whenever the snapshot is bad, so too is the equivalent .txt created at the same time using File | Save as Text file... The fault is consistent - on every occasion I have had the fault it has been that it stopped short at a few lines into the Hard Drives section. Always seems to be truncating at the end of the Serial Number line; however in one case I noticed, where there were 3 internal HDD in the pc, it listed the first and second HDDs fully, and truncated at the end of the Serial Number line for the third HDD. Truncations have all been, as far as I have noticed, at the end of Serial Number lines for WDC disks - maybe Speccy doesn't like something about WDC?
My conclusion is that the output from Save Snapshot and Save as Text file are bad.
Note that Save as XML and Publish Snapshot work properly even when Save Snapshot and Save as Text file do not.
I'm using portable Speccy freshly downloaded from the Piriform website.
Exhibits
good: http://speccy.piriform.com/results/x2WGLM9BdetYv7x7Oquk48F
bad.txt attached
bad.speccy - it wouldn't let me attach this, plain nor zipped
good.xps - I was gonna add this, but I couldn't work out how to remove the identifying info
bad2.txt this is from a different computer, with 3 HDD, it stopped after a few lines into the third HDD listed.
Thanks
bad.txt
bad2.txt