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 Post subject: 502 Proxy Error
PostPosted: Fri Mar 08, 2013 2:05 pm 
For some submissions to GREAT I get the following error message (regardless of which computer/internet connection I'm using):

502 Proxy Error

The proxy server received an invalid response from an upstream server.
The proxy server could not handle the request POST /great/public/cgi-bin/greatWeb.php.

Reason: Error reading from remote server

Apache/2.2.3 (CentOS) Server at Port 80

Any ideas on how to get around this?

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 Post subject:
PostPosted: Mon Mar 18, 2013 5:44 am 
Site Admin
Please try using this URL: to get around that error.

Bejerano Team
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PostPosted: Sun Sep 15, 2013 6:43 am 

I also get this error, and I tried to use the forum as well as experiment to overcome it, with no success.

--Programing interface:

--2013-09-15 10:28:23--
Connecting to||:80... connected.
HTTP request sent, awaiting response... 502 Proxy Error
2013-09-15 10:30:23 ERROR 502: Proxy Error.

-- GUI:
GREAT currently supports input files of up to 500,000 test regions and 1,000,000 background regions, totalling no more than 50 MB in size, whichever is more restrictive.

1. If I use the background file or any of the files with the "whole genome=" as background, it works well.
2. the files look good -
Size: background 230269 regions, 5.3M. The biggest test is 1.2M. Files are at

ex of tail:
chr9 123065682 123066082
chr9 123115648 123116048
chr9 123124523 123124923
3. When I tried cluster 2 (, it did work with the background...

Any thoughts?

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Fatal: Not able to open ./cache/data_global.php