[wix-users] signed bootstrapper exe failing to extract

[Derek Wetherall]

Dear experts,
i have a digitally signed bootstrapper executable that works
absolutely fine if uncompressed, but if we compress the msi it failed
with...

Error 0x80070001: Failed to extract all files from container, erf: 1:2:0

for security reasons we have to sign the executable outside of wix.

Has anyone seen this before?
I see references on the net to signing the engine as well.
Is this the issue?