Moving this discussion to the Enterprise Deployment forum.
It seems that the patch using which you are trying to update Reader 10.1.2 to 10.1.3 is corrupt.
Please be sure that you have Reader 10.1.2 installed and then update it using the following MSP file:
To install Reader 10.1.3. Here are the correct sequence, you need to follow
- Acceptable: 10.0.0 > 10.1.3 (Q)
For more details, please refer to http://helpx.adobe.com/acrobat/kb/update-patch-acrobat-reader-10.html