I just put MAMP and Joomla 2.5 and the newest K2 on my MAC with Mountain Lion and have the same issue - the connection gets reset on uploading images, even small images.

On Mountain Lion I can replicate this using MAMP set to php5.4, reverting to 5.2 and the error is gone, so temp fix may be to simply revert to older version of PHP. I haven;t tested 5.3 yet.

Im now successfully using php 5.4.6. Stumbled across this the other day. Makes setting up a web server on a mac a breeze.... php-osx.liip.ch/

Joomla 2.5 and k2 works fine when using this setup.

Hi, I too am having the same problem.
I am very new to Joomla and have also just installed K2 today (which I am already loving by the way, even though I have the same error)!
I am using Mac OS X 10.6.8 and have a local installation of Joomla 2.5 9. I'm using MAMP and PHP is 5.4.4.

Even without K2 installed I've been seeing lots of error messages when working in Joomla. After installing K2 I am still seeing the same kinds of errors. The list below was displayed after selecting an Item to edit:

Strict Standards: Non-static method WFEditor::getInstance() should not be called statically, assuming $this from incompatible context in /Applications/MAMP/htdocs/cerulean-rocketlauncher_j25/administrator/components/com_jce/models/editor.php on line 77

Strict Standards: Non-static method WFEditor::getInstance() should not be called statically, assuming $this from incompatible context in /Applications/MAMP/htdocs/cerulean-rocketlauncher_j25/administrator/components/com_jce/models/editor.php on line 87

Strict Standards: Non-static method WFEditor::getInstance() should not be called statically, assuming $this from incompatible context in /Applications/MAMP/htdocs/cerulean-rocketlauncher_j25/administrator/components/com_jce/models/editor.php on line 373

Strict Standards: Non-static method WFEditor::getInstance() should not be called statically, assuming $this from incompatible context in /Applications/MAMP/htdocs/cerulean-rocketlauncher_j25/administrator/components/com_jce/models/editor.php on line 494

Strict Standards: Non-static method WFEditor::getInstance() should not be called statically, assuming $this from incompatible context in /Applications/MAMP/htdocs/cerulean-rocketlauncher_j25/administrator/components/com_jce/models/editor.php on line 405

Strict Standards: Non-static method WFEditor::getInstance() should not be called statically, assuming $this from incompatible context in /Applications/MAMP/htdocs/cerulean-rocketlauncher_j25/administrator/components/com_jce/models/editor.php on line 690

Strict Standards: Non-static method WFEditor::getInstance() should not be called statically in /Applications/MAMP/htdocs/cerulean-rocketlauncher_j25/components/com_jce/editor/tiny_mce/plugins/inlinepopups/classes/config.php on line 16

Strict Standards: Non-static method WFEditor::getInstance() should not be called statically in /Applications/MAMP/htdocs/cerulean-rocketlauncher_j25/components/com_jce/editor/tiny_mce/plugins/source/classes/config.php on line 32

Strict Standards: Non-static method WFEditor::getInstance() should not be called statically, assuming $this from incompatible context in /Applications/MAMP/htdocs/cerulean-rocketlauncher_j25/administrator/components/com_jce/models/editor.php on line 690

Strict Standards: Non-static method WFEditor::getInstance() should not be called statically in /Applications/MAMP/htdocs/cerulean-rocketlauncher_j25/components/com_jce/editor/tiny_mce/plugins/cleanup/classes/config.php on line 18

Strict Standards: Non-static method WFEditor::getInstance() should not be called statically, assuming $this from incompatible context in /Applications/MAMP/htdocs/cerulean-rocketlauncher_j25/administrator/components/com_jce/models/editor.php on line 77

Strict Standards: Non-static method WFEditor::getInstance() should not be called statically, assuming $this from incompatible context in /Applications/MAMP/htdocs/cerulean-rocketlauncher_j25/administrator/components/com_jce/models/editor.php on line 77

Strict Standards: Non-static method WFEditor::getInstance() should not be called statically in /Applications/MAMP/htdocs/cerulean-rocketlauncher_j25/components/com_jce/editor/tiny_mce/plugins/code/classes/config.php on line 20

Strict Standards: Non-static method WFEditor::getInstance() should not be called statically, assuming $this from incompatible context in /Applications/MAMP/htdocs/cerulean-rocketlauncher_j25/administrator/components/com_jce/models/editor.php on line 77

Strict Standards: Non-static method WFEditor::getInstance() should not be called statically in /Applications/MAMP/htdocs/cerulean-rocketlauncher_j25/components/com_jce/editor/tiny_mce/plugins/format/classes/config.php on line 18

Strict Standards: Non-static method WFEditor::getInstance() should not be called statically, assuming $this from incompatible context in /Applications/MAMP/htdocs/cerulean-rocketlauncher_j25/administrator/components/com_jce/models/editor.php on line 612

Strict Standards: Non-static method WFEditor::getInstance() should not be called statically in /Applications/MAMP/htdocs/cerulean-rocketlauncher_j25/components/com_jce/editor/tiny_mce/plugins/media/classes/config.php on line 17

Strict Standards: Non-static method WFEditor::getInstance() should not be called statically, assuming $this from incompatible context in /Applications/MAMP/htdocs/cerulean-rocketlauncher_j25/administrator/components/com_jce/models/editor.php on line 77

Strict Standards: Non-static method WFEditor::getInstance() should not be called statically in /Applications/MAMP/htdocs/cerulean-rocketlauncher_j25/components/com_jce/editor/tiny_mce/plugins/clipboard/classes/config.php on line 17

Strict Standards: Non-static method WFEditor::getInstance() should not be called statically in /Applications/MAMP/htdocs/cerulean-rocketlauncher_j25/components/com_jce/editor/tiny_mce/plugins/source/classes/config.php on line 17

Strict Standards: Non-static method WFEditor::getInstance() should not be called statically in /Applications/MAMP/htdocs/cerulean-rocketlauncher_j25/components/com_jce/editor/tiny_mce/plugins/table/classes/config.php on line 16

Strict Standards: Non-static method WFEditor::getInstance() should not be called statically in /Applications/MAMP/htdocs/cerulean-rocketlauncher_j25/components/com_jce/editor/tiny_mce/plugins/visualchars/classes/config.php on line 16

Strict Standards: Non-static method WFEditor::getInstance() should not be called statically in /Applications/MAMP/htdocs/cerulean-rocketlauncher_j25/components/com_jce/editor/tiny_mce/plugins/visualblocks/classes/config.php on line 16

Strict Standards: Non-static method WFEditor::getInstance() should not be called statically in /Applications/MAMP/htdocs/cerulean-rocketlauncher_j25/components/com_jce/editor/tiny_mce/plugins/imgmanager/classes/config.php on line 17

Strict Standards: Non-static method WFEditor::getInstance() should not be called statically in /Applications/MAMP/htdocs/cerulean-rocketlauncher_j25/components/com_jce/editor/tiny_mce/plugins/spellchecker/classes/config.php on line 15

Strict Standards: Non-static method WFEditor::getInstance() should not be called statically in /Applications/MAMP/htdocs/cerulean-rocketlauncher_j25/components/com_jce/editor/tiny_mce/plugins/article/classes/config.php on line 15

Strict Standards: Non-static method WFEditor::getInstance() should not be called statically in /Applications/MAMP/htdocs/cerulean-rocketlauncher_j25/components/com_jce/editor/tiny_mce/plugins/advlist/classes/config.php on line 15

Strict Standards: Declaration of JParameter::loadSetupFile() should be compatible with JRegistry::loadSetupFile() in /Applications/MAMP/htdocs/cerulean-rocketlauncher_j25/libraries/joomla/html/parameter.php on line 24

Now, when I first installed the RocketTheme template, I quickly learned that I had to increase the memory in config.php to 128M. So, that's done.

So, now that I've installed K2, I've imported my existing content to K2. Now I'm trying to insert an image into an item. As soon as I hit save I receive the same error as everyone else in this thread:

The connection was reset

The connection to the server was reset while the page was loading.

The site could be temporarily unavailable or too busy. Try again in a few
moments.
If you are unable to load any pages, check your computer's network
connection.
If your computer or network is protected by a firewall or proxy, make sure
that Firefox is permitted to access the Web.

I hope that the error messages above will go some way with trying to solve this problem? I have error reporting set to maximum but I can't see any error specifically relating to the crash I'm receiving when inserting an image.

Apologies for the rather long message!

...and now that I have maximum error reporting set, the actual page on the site is showing the following error:

Strict Standards: Declaration of JParameter::loadSetupFile() should be compatible with JRegistry::loadSetupFile() in /Applications/MAMP/htdocs/cerulean-rocketlauncher_j25/libraries/joomla/html/parameter.php on line 24

...if that's any help?!