This was released by Intuit this morning:

Error 1328 when updating Point of sale v18 and v12 to latest release (r4 and r14)

What you may be experiencing:

When updating to the latest release of QuickBooks Point of Sale V12 or V18 we receive Error 1328: 
Failed to install update. Microsoft Install Error: 1328, Error applying patch to file. C:Config.MsuPTFB53.tmp. It has probably been updated by other means, and can no longer be modified by this patch.

What you can try now:

We have identified two workarounds that may help you resolve this issue.

1. Rename the file C:Config.MsuPTFB53.tmp then reinstall the patch

2 Perform clean reinstall on POS then update or apply the patch again. Click here to review the steps to preform a clean reinstall.

Current Status:

We are aware of this issue and are researching root cause and possible solutions.