[anothercolour]

Hello all,
I just purchased Structure 1.1, and I'm having problems saving patches.
Here's the situation:
I make a patch from my own samples and save it to disc.
I then further edit the patch and attempt to save my new edits.
When I save over the previously written patch, I receive a message that reads:
"An error occurred while writing the patch file."
The patch is no longer usable from this point.
Is anyone else experiencing this?
I'm on a Mac, OS 10.6.5 with Pro Tools HD9.
Thank you.