I attempted to upgrade to the current version from 6.10.18 and received the following message and have never received it before.

E:\MY DOCUMENTS\Downloads\BOINC\boinc_6.10.36_windows_intelx86.exe is not a valid Win32 application

System info:

03/06/2010 10:22:09 Starting BOINC client version 6.10.18 for windows_intelx86
03/06/2010 10:22:09 log flags: file_xfer, sched_ops, task
03/06/2010 10:22:09 Libraries: libcurl/7.19.4 OpenSSL/0.9.8l zlib/1.2.3
03/06/2010 10:22:09 Data directory: E:\My Documents
03/06/2010 10:22:09 Running under account Cliff Harding
03/06/2010 10:22:09 Processor: 2 GenuineIntel Intel(R) Pentium(R) Dual CPU E2180 @ 2.00GHz [x86 Family 6 Model 15 Stepping 13]
03/06/2010 10:22:09 Processor: 1.00 MB cache
03/06/2010 10:22:09 Processor features: fpu tsc pae nx sse sse2 pni mmx
03/06/2010 10:22:09 OS: Microsoft Windows Vista: Business x86 Edition, Service Pack 2, (06.00.6002.00)
03/06/2010 10:22:09 Memory: 2.00 GB physical, 4.23 GB virtual
03/06/2010 10:22:09 Disk: 465.76 GB total, 448.01 GB free
03/06/2010 10:22:09 Local time is UTC -5 hours
03/06/2010 10:22:10 NVIDIA GPU 0: GeForce 9600 GT (driver version 19675, CUDA version 3000, compute capability 1.1, 500MB, 218 GFLOPS peak)
03/06/2010 10:22:10 Not using a proxy
03/06/2010 10:22:10 SETI@home URL http://setiathome.berkeley.edu/; Computer ID 5074598; resource share 100
03/06/2010 10:22:10 SETI@home General prefs: from SETI@home (last modified 16-Dec-2009 06:55:12)
03/06/2010 10:22:10 SETI@home Computer location: home
03/06/2010 10:22:10 SETI@home General prefs: no separate prefs for home; using your defaults
03/06/2010 10:22:10 Preferences limit memory usage when active to 1739.64MB
03/06/2010 10:22:10 Preferences limit memory usage when idle to 2046.64MB
03/06/2010 10:22:10 Preferences limit disk usage to 300.00GB
03/06/2010 10:22:10 Preferences limit # CPUs to 1
03/06/2010 10:22:11 SETI@home Restarting task 11ja07ad.26717.189184.5.10.112_0 using setiathome_enhanced version 603

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I don't buy computers, I build them!!

Download it again. The message means that it's not completely in, Windows isn't recognizing it. Preferably download it to a different directory. Cleaning out your temporary internet files may also help. Do make sure to delete the old downloaded installer.

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Downloaded again and the installation was successfull. It seems that the BOINCTRAY.EXE was still running after stopping the application prior to the originial download. THANKS!!!!

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I don't buy computers, I build them!!

Which doesn't matter much for downloading or installing a new BOINC.

Boinctray.exe is the BOINC idle tracking program for Windows Vista and Windows 7 for when BOINC is installed as a service.

The installer will kill the running of the present version then delete its program (along with all other Boinc executables), then install the new one (but not start the new one, that's only done on a reboot as it starts from the registry).

The error message you got was one from Windows, that it couldn't even start the installer. Usually due to a little corruption of the installer file. It may have looked like it was all in, but even missing a couple of bytes means that the program isn't working.

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I've noticed that downloads from Boinc seem to get currupted often. It's happened on most of the last half dozen (Alpha version) updates I've made. I usually just do an overwrite when I re-download it.

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Boinc V7.2.42
Win7 i5 3.33G 4GB, GTX470

I usually just do an overwrite when I re-download it.

The problem with that is that when you do that with IE, it will just get the already downloaded one from the temporary internet files folder, instead of really downloading it again.

When you have the problem with multiple versions, first thing to check is the internet connection/cable/NIC. You may be dropping packets.

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I usually just do an overwrite when I re-download it.

The problem with that is that when you do that with IE, it will just get the already downloaded one from the temporary internet files folder, instead of really downloading it again.

When you have the problem with multiple versions, first thing to check is the internet connection/cable/NIC. You may be dropping packets.

I've had the same D/L problems with both my slow DSL and fast cable. It is the only site that drops downloads randomly mid-stream. It usually works the second time around.

I often download files 10-20 time the size of the Boinc installer with no problems.

The file is always truncated and usually rather small (under 3 Megs) so the cached version doesn't come into play. I've gotten into the habit of checking the file size before running it.