Changes made to the attachments are not permanent until you save this post. The first "listed" file will be included in RSS feeds.
{ "status": true, "data": "\x3ctable id=\"upload-attachments\" class=\"sticky-enabled\"\x3e\n \x3cthead\x3e\x3ctr\x3e\x3cth\x3e\x3c/th\x3e\x3cth\x3eDelete\x3c/th\x3e\x3cth\x3eList\x3c/th\x3e\x3cth\x3eDescription\x3c/th\x3e\x3cth\x3eWeight\x3c/th\x3e\x3cth\x3eSize\x3c/th\x3e \x3c/tr\x3e\x3c/thead\x3e\n\x3ctbody\x3e\n \x3ctr class=\"draggable odd\"\x3e\x3ctd\x3e\x3c/td\x3e\x3ctd\x3e\x3cdiv class=\"form-item\" id=\"edit-files-35-remove-wrapper\"\x3e\n \x3cinput type=\"checkbox\" name=\"files[35][remove]\" id=\"edit-files-35-remove\" value=\"1\" class=\"form-checkbox\" /\x3e\n\x3c/div\x3e\n\x3c/td\x3e\x3ctd\x3e\x3cdiv class=\"form-item\" id=\"edit-files-35-list-wrapper\"\x3e\n \x3cinput type=\"checkbox\" name=\"files[35][list]\" id=\"edit-files-35-list\" value=\"1\" checked=\"checked\" class=\"form-checkbox\" /\x3e\n\x3c/div\x3e\n\x3c/td\x3e\x3ctd\x3e\x3cdiv class=\"form-item\" id=\"edit-files-35-description-wrapper\"\x3e\n \x3cinput type=\"text\" maxlength=\"256\" name=\"files[35][description]\" id=\"edit-files-35-description\" size=\"60\" value=\"Child-Africa-2.jpg\" class=\"form-text\" /\x3e\n \x3cdiv class=\"description\"\x3e\x3csmall\x3ehttp://www.ugiekicharitabletrust.org/trust/sites/default/files/Child-Afr...\x3c/small\x3e\x3c/div\x3e\n\x3c/div\x3e\n\x3c/td\x3e\x3ctd\x3e\x3cdiv class=\"form-item\" id=\"edit-files-35-weight-wrapper\"\x3e\n \x3cselect name=\"files[35][weight]\" class=\"form-select upload-weight\" id=\"edit-files-35-weight\" \x3e\x3coption value=\"-1\"\x3e-1\x3c/option\x3e\x3coption value=\"0\" selected=\"selected\"\x3e0\x3c/option\x3e\x3coption value=\"1\"\x3e1\x3c/option\x3e\x3c/select\x3e\n\x3c/div\x3e\n\x3c/td\x3e\x3ctd\x3e38 KB\x3c/td\x3e \x3c/tr\x3e\n\x3c/tbody\x3e\n\x3c/table\x3e\n\x3cdiv class=\"form-item\" id=\"edit-upload-wrapper\"\x3e\n \x3clabel for=\"edit-upload\"\x3eAttach new file: \x3c/label\x3e\n \x3cinput type=\"file\" name=\"files[upload]\" class=\"form-file\" id=\"edit-upload\" size=\"40\" /\x3e\n\n \x3cdiv class=\"description\"\x3eThe maximum upload size is \x3cem\x3e1 MB\x3c/em\x3e. Only files with the following extensions may be uploaded: \x3cem\x3ejpg jpeg gif png txt doc xls pdf ppt pps odt ods odp\x3c/em\x3e. \x3c/div\x3e\n\x3c/div\x3e\n\x3cfieldset class=\" collapsible collapsed\"\x3e\x3clegend\x3eCAPTCHA: no challenge enabled\x3c/legend\x3e\x3ca href=\"/trust/admin/user/captcha/captcha/captcha_point/upload_js?destination=upload%2Fjs\"\x3ePlace a CAPTCHA here for untrusted users.\x3c/a\x3e\x3c/fieldset\x3e\n\x3cspan class=\"art-button-wrapper\"\x3e\x3cspan class=\"l\"\x3e\x3c/span\x3e\x3cspan class=\"r\"\x3e\x3c/span\x3e\x3cinput type=\"submit\" name=\"attach\" id=\"edit-attach\" value=\"Attach\" class=\"form-submit art-button\"/\x3e\x3c/span\x3e" }

I get this error whenever I try to attach file after browsing files in d6, but if i simply save that content get no error .
Tried in chrome & ff 3.6 but still same error using conventional upload module .