Those seem to be the crucial lines from your Log.
Perhaps, as 'zanglang' suggested, the autocan deb file you downloaded is bad.
You could try getting a new copy and this time when it asks you 'to open or save', saving it first to make absolutely sure the entire deb file gets downloaded. Afterwards you can install from Application Manager's: Application "Install from file".
If it still won't install you'll at least know that the problem wasn't a partially downloaded or corrupted 'autoscan' deb file.