BOINC v7.0.28 x64 Windows 8 - problem running SETI@Home Enhanced 6.03

I have Windows 8 and BOINC v7.0.28 x64 running SETI@Home Enhanced 6.03. The files download and then immediately say "Download Failed." Astropulse files work fine. I have looked on the message boards but have not found anyone addressing this problem exactly as I am having it. Here is a brief summary of what my platform is:

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OS Name Microsoft Windows 8
Version 6.2.9200 Build 9200
Other OS Description Not Available
OS Manufacturer Microsoft Corporation
System Name NEWPOWERACE
System Manufacturer TOSHIBA
System Model Satellite L875D
System Type x64-based PC
System SKU PSKFQU
Processor AMD A6-4400M APU with Radeon(tm) HD Graphics, 2700 Mhz, 2 Core(s), 2 Logical Processor(s)
BIOS Version/Date Insyde Corp. 6.20, 10/24/2012
SMBIOS Version 2.7
Embedded Controller Version 6.00
BIOS Mode UEFI
BaseBoard Manufacturer AMD
BaseBoard Model Not Available
BaseBoard Name Base Board
Platform Role Mobile
Secure Boot State On
PCR7 Configuration Binding Not Possible
Windows Directory C:\windows
System Directory C:\windows\system32
Boot Device \Device\HarddiskVolume2
Locale United States
Hardware Abstraction Layer Version = "6.2.9200.16442"
User Name NewPowerAce\Shawn H. Hall
Time Zone Pacific Daylight Time
Installed Physical Memory (RAM) 6.00 GB
Total Physical Memory 5.46 GB
Available Physical Memory 2.69 GB
Total Virtual Memory 6.34 GB
Available Virtual Memory 2.55 GB
Page File Space 896 MB
Page File C:\pagefile.sys
Hyper-V - VM Monitor Mode Extensions Yes
Hyper-V - Second Level Address Translation Extensions Yes
Hyper-V - Virtualization Enabled in Firmware Yes
Hyper-V - Data Execution Protection Yes
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Any help would be much appreciated.

Thanks in advance, Shawn H.
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Your ISP has a problem with image files. It appears to recompress them, which gives errors such as:

I haven't checked to see if that fixed the problem or not, but I do believe that you have solved my problem after looking at the log files. Thanks a lot, I do appreciate your time.

Shawn H.
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Well, sad to say, but that did not fix my problem. Here is a sample message set that I copied from the log (I know that the timestamp is from before the attempted fix, but the new messages are exactly the same):

4/5/2013 12:58:28 PM | SETI@home | Finished download of seti_603.jpg
4/5/2013 12:58:28 PM | SETI@home | [error] File seti_603.jpg has wrong size: expected 9068, got 5712
4/5/2013 12:58:28 PM | SETI@home | [error] Checksum or signature error for seti_603.jpg

So what now? I am a long-time participant, but know very little about the workings of this or any other project. I just installed it many years ago, originally to give my always-on computers something to do, and to use the screensaver to prevent burn-in on my monitors. Consequently, I cannot "heal thyself," so to speak.

I would appreciate it if anyone is interested in figuring this out for me.

Thanks, Shawn H.
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Did you make sure the client on the computer updated after you made the changes?
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Grant
Darwin NT.

What if you download the file yourself and store it in your Seti directory?
That's default on Windows 8 at C:\Programdata\BOINC\projects\setiathome.berkeley.edu\ and it will be a hidden directory, so you either have to fill in the path directly in Windows Explorer, or set Windows to show hidden files and folders.

You can find this image file at http://boinc2.ssl.berkeley.edu/sah/download_fanout/seti_603.jpg
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Jord

Not available. Reorganizing my life. So, let's see what's over there...

Loving awareness is free.

I can't believe it. I updated SETI@Home MANY times since the solution was first posted. I just checked the app and, you guessed it, the box wasn't checked. I wonder why the app didn't sync with the web after so many updates? Oh, well. It's definitely working now.

Thanks a lot, Shawn H.
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What if you download the file yourself and store it in your Seti directory?
That's default on Windows 8 at C:\Programdata\BOINC\projects\setiathome.berkeley.edu\ and it will be a hidden directory, so you either have to fill in the path directly in Windows Explorer, or set Windows to show hidden files and folders.

You can find this image file at http://boinc2.ssl.berkeley.edu/sah/download_fanout/seti_603.jpg