Check for the availability of ob_start()

meet the requirements? or remove the module...

if you clear cache and visit the reports page it shows as all green? otherwise possible core is doing something weird during the update process to mess things up? I can't imagine what.

I cannot reproduce...can you possible provide more details or debug further?

This is happening to me as well

the Report page shows this: Your PHP environment does not support the minimum requirements for the AWS SDK for PHP.

And the update.php shows it too, and won't go ahead

The compatible test page shows all green, no problems there

I've talked to justafish, he helped me dig into this problem. He believe this is a bug

I have all up to date modules, aws sdk, etc. It was all working fine the past few days, nothing has been changed

Yet today I noticed this error:

AWSSDK	1.5.0.1 [compatibility test]
Your PHP environment does not support the minimum requirements for the AWS SDK for PHP.

I digged it a big, the ob_get_clean() function (line 79) returns that my system does not support it! weird, see:

#! /usr/bin/env php

[1;37m[44m AWS SDK for PHP [0m
PHP Environment Compatibility Test (CLI)
----------------------------------------

PHP 5.2 or newer............ [1;37m[42m Yes [0m 5.3.5-1ubuntu7.4
64-bit architecture......... [1;37m[41m No  [0m
cURL with SSL............... [1;37m[42m Yes [0m 7.21.3 (OpenSSL/0.9.8o)
Standard PHP Library........ [1;37m[42m Yes [0m
SimpleXML................... [1;37m[42m Yes [0m
JSON........................ [1;37m[42m Yes [0m
PCRE........................ [1;37m[42m Yes [0m
File system read/write...... [1;37m[42m Yes [0m
OpenSSL extension........... [1;37m[42m Yes [0m
Zlib........................ [1;37m[42m Yes [0m
APC......................... [1;37m[41m No  [0m
XCache...................... [1;37m[41m No  [0m
Memcache.................... [1;37m[41m No  [0m
Memcached................... [1;37m[41m No  [0m
PDO......................... [1;37m[42m Yes [0m
SQLite 2.................... [1;37m[41m No  [0m
SQLite 3.................... [1;37m[41m No  [0m
PDO-SQLite driver........... [1;37m[41m No  [0m
open_basedir disabled....... [1;37m[42m Yes [0m
safe_mode disabled.......... [1;37m[42m Yes [0m
Garbage Collector enabled... [1;37m[41m No  [0m
Valid SSL certificate....... [1;37m[42m Yes [0m

----------------------------------------

[1;37m[42m Your environment meets the minimum requirements for using the AWS SDK for PHP! [0m

* The OpenSSL extension is installed. This will allow you to use CloudFront
  Private URLs and decrypt Windows instance passwords.
* The Zlib extension is installed. The SDK will automatically leverage the
  compression capabilities of Zlib.
* You're running on a 32-bit system. This means that PHP does not correctly
  handle files larger than 2GB (this is a well-known PHP issue).
* Storage types available for response caching: The file system

Bottom Line: We're sorry... Your PHP environment does not support the minimum requirements for the 
AWS SDK for PHP.

If ob_get_clean() does not work on your system, then 1) [my original question] how does this work normally...nothing special about update.php, 2) how is that a bug? if anything we might have to check for the functions existence..i dunno.

My site is working with the AWS services (upload/download normal)

The only problem is with that error in the Report page, and the fact that it disrupt the update.php

Try this out.

Committed this along with a number of other hook_requirements() tweaks/improvements. Please see commits for details.

Re-open if still an issue.