Pixel Bender Update fails

Question

The Adobe Application Manager ran about a week ago and updated my CS5 Master Ed to 12.0.3 however Pixel Bender Toolkit 2.5 update failed to install in AE and Fl Pro. Every time the manager runs with an update it won't install PB 2.5. I have turned of my AV and tried, no luck. If I go into AE, PB works no problem. It just won't take the update. I have PB in my Adobe collection but it's version 2.1. Any ideas what the problem might be? Will I have to do a complete reinstall? That is a last option if possible. I have tried to download PB 2.5 from the PB site but it won't install either. Here is the error:
Exit Code: 7
-------------------------------------- Summary --------------------------------------
- 0 fatal error(s), 5 error(s), 4 warning(s)
WARNING: Payload:{2F6B67F4-A2BB-45D7-A80C-25FF646CC1C5} Adobe Player for Embedding has been updated and has been selected for repair. The patch {55516693-25E2-4620-BF94-6BA66B00419F} Adobe Player for Embedding_3.1_AdobeAPE3-mul will be uninstalled now.
WARNING: Payload:{2F6B67F4-A2BB-45D7-A80C-25FF646CC1C5} Adobe Player for Embedding has been updated and has been selected for repair. The patch {55516693-25E2-4620-BF94-6BA66B00419F} Adobe Player for Embedding_3.1_AdobeAPE3-mul will be uninstalled now.
WARNING: Payload cannot be installed due to dependent operation failure
WARNING: Payload cannot be installed due to dependent operation failure
ERROR: MsiConfigureProductEx failed with error: 1612 - The installation source for this product is not available. Verify that the source exists and that you can access it.
MSI Error message:
ERROR: The following payload errors were found during install:
ERROR:  - Microsoft_VC90_CRT_x86: Install failed
ERROR:  - Pixel Bender Toolkit_2.5_aifsdk-win: Install failed
ERROR:  - Pixel Bender Toolkit: Install failed
Windows 7 - x64
8Gb ram
CS5 Master Collection

Answer 1

The installer seems to be failing while installing Microsoft_VC90_CRT_x86.msi. As per your error log the msi error is 1612, so the following steps may help you in installing the update successfully -
You will find Microsoft_VC90_CRT_x86.msi in your PB 2.5 update payloads folder. Double click to install the msi manually. When it prompts for the path point to itself (i.e. Microsoft_VC90_CRT_x86.msi). If installation of Microsoft_VC90_CRT_x86.msi is successful, run the PB 2.5 update.