Hi Rajarak,

Thanks for your feedback. I tried the solution.

First I tried this (Connection tag exactly as yours)

if (this.parameters.server_url == null) {

force.serverUrl ="http://na5.salesforce.com/services/Soap/u/14.0";

}

I receive a error now, that my login or security token is incorrect. This could very well be, because my sandbox is actually on cs2.

So I tried

if (this.parameters.server_url == null) {

force.serverUrl ="http://c2.salesforce.com/services/Soap/u/14.0";

}

No more login errors, but now, even inside flex, I receive this error:

(com.salesforce.results::Fault)#0
context = (null)
detail = (Object)#1
UnexpectedErrorFault = (Object)#2
exceptionCode = "UNSUPPORTED_CLIENT"
exceptionMessage = "HTTPS Required"
xsi:type = "sf:UnexpectedErrorFault"
faultcode = "sf:UNSUPPORTED_CLIENT"
faultstring = "UNSUPPORTED_CLIENT: HTTPS Required"

an error, which I have had before when trying different protocols, url etc.Then...suddenly I got very happy, as I remembered the setting in the security controls to only allow https! Thought the problem would be solved now! 

So unchecked the 'https required' and tried again.... it works!!! (In the flex builder that is)

Time for a test online (http://www.harmkorten.nl/flex/VIV_Planner_2.html) ... failllure :( A new error this time though, one I think i've seen before in this thread:

(com.salesforce.events::ApexFaultEvent)#0
bubbles = false
cancelable = true
context = (null)
currentTarget = (null)
eventPhase = 2
fault = (mx.rpc::Fault)#1
content = (null)
errorID = 0
faultCode = "Channel.Security.Error"
faultDetail = "Destination: DefaultHTTP"
faultString = "Security error accessing url"
message = "faultCode:Channel.Security.Error faultString:'Security error accessing url' faultDetail:'Destination: DefaultHTTP'"
name = "Error"
rootCause = (flash.events::SecurityErrorEvent)#2
bubbles = false
cancelable = false
currentTarget = (flash.net::URLLoader)#3
bytesLoaded = 0
bytesTotal = 0
data = (null)
dataFormat = "text"
eventPhase = 2
target = (flash.net::URLLoader)#3
text = "Error #2170: Security sandbox violation: http://www.harmkorten.nl/flex/VIV_Planner_2.swf cannot send HTTP headers to https://cs2-api.salesforce.com/services/Soap/u/14.0/00DR00000008CLA?1000.7266148291528."
type = "securityError"
headers = (null)
message = (mx.messaging.messages::ErrorMessage)#4
body = (null)
clientId = "DirectHTTPChannel0"
correlationId = "662898D2-44A2-FB5E-68B4-E4A9F33B5CA6"
destination = ""
extendedData = (null)
faultCode = "Channel.Security.Error"
faultDetail = "Destination: DefaultHTTP"
faultString = "Security error accessing url"
headers = (Object)#5
DSStatusCode = 0
messageId = "FF9DE558-D09C-0887-63EF-E4A9F9EA0508"
rootCause = (flash.events::SecurityErrorEvent)#2
timestamp = 0
timeToLive = 0
messageId = "FF9DE558-D09C-0887-63EF-E4A9F9EA0508"
statusCode = 0
target = (null)
token = (mx.rpc::AsyncToken)#6
message = (mx.messaging.messages::HTTPRequestMessage)#7
body = "<se:Envelope xmlns:se="http://schemas.xmlsoap.org/soap/envelope/"><se:Header xmlns:sfns="urn:partner.soap.sforce.com"><sfns:SessionHeader><sessionId>00DR00000008CLA!ARUAQBlnjZZIUd4yq2UzRm5P50abZ3uDrDkRbdJAewetoNrG96mdOGd2QSnVF06mVgVZ6n8Rqg00rFCy9_NGM0rpx95poDaw</sessionId></sfns:SessionHeader></se:Header><se:Body><query xmlns="urn:partner.soap.sforce.com" xmlns:ns1="sobject.partner.soap.sforce.com"><queryString>SELECT Id, Name, OpportunityLineItemId__c,VIV_Project__c,VIV_Project__r.Name, VIV_Project__r.Schedule_Planning__c, VIV_Project__r.Opportunity__c,VIV_Project__r.Opportunity__r.Name FROM VIV_Project_Task__c</queryString></query></se:Body></se:Envelope>"
clientId = (null)
contentType = "text/xml; charset=UTF-8"
destination = "DefaultHTTP"
headers = (Object)#8
DSEndpoint = "direct_http_channel"
httpHeaders = (Object)#9
Accept = "text/xml"
SOAPAction = """"
X-Salesforce-No-500-SC = "true"
messageId = "662898D2-44A2-FB5E-68B4-E4A9F33B5CA6"
method = "POST"
recordHeaders = false
timestamp = 0
timeToLive = 0
url = "https://cs2-api.salesforce.com/services/Soap/u/14.0/00DR00000008CLA?1000.7266148291528"
responders = (Array)#10
[0] (::SalesForceResponder)#11
result = (null)
type = "fault"(com.salesforce.events::ApexFaultEvent)#0
bubbles = false
cancelable = true
context = (null)
currentTarget = (null)
eventPhase = 2
fault = (mx.rpc::Fault)#1
content = (null)
errorID = 0
faultCode = "Channel.Security.Error"
faultDetail = "Destination: DefaultHTTP"
faultString = "Security error accessing url"
message = "faultCode:Channel.Security.Error faultString:'Security error accessing url' faultDetail:'Destination: DefaultHTTP'"
name = "Error"
rootCause = (flash.events::SecurityErrorEvent)#2
bubbles = false
cancelable = false
currentTarget = (flash.net::URLLoader)#3
bytesLoaded = 0
bytesTotal = 0
data = (null)
dataFormat = "text"
eventPhase = 2
target = (flash.net::URLLoader)#3
text = "Error #2170: Security sandbox violation: http://www.harmkorten.nl/flex/VIV_Planner_2.swf cannot send HTTP headers to https://cs2-api.salesforce.com/services/Soap/u/14.0/00DR00000008CLA?1000.5822666748427."
type = "securityError"
headers = (null)
message = (mx.messaging.messages::ErrorMessage)#4
body = (null)
clientId = "DirectHTTPChannel0"
correlationId = "5EA262D6-489B-EAE5-AC61-E4A9F33B3F83"
destination = ""
extendedData = (null)
faultCode = "Channel.Security.Error"
faultDetail = "Destination: DefaultHTTP"
faultString = "Security error accessing url"
headers = (Object)#5
DSStatusCode = 0
messageId = "2AF19926-8FA3-83E2-800F-E4A9F9F01EA6"
rootCause = (flash.events::SecurityErrorEvent)#2
timestamp = 0
timeToLive = 0
messageId = "2AF19926-8FA3-83E2-800F-E4A9F9F01EA6"
statusCode = 0
target = (null)
token = (mx.rpc::AsyncToken)#6
message = (mx.messaging.messages::HTTPRequestMessage)#7
body = "<se:Envelope xmlns:se="http://schemas.xmlsoap.org/soap/envelope/"><se:Header xmlns:sfns="urn:partner.soap.sforce.com"><sfns:SessionHeader><sessionId>00DR00000008CLA!ARUAQBlnjZZIUd4yq2UzRm5P50abZ3uDrDkRbdJAewetoNrG96mdOGd2QSnVF06mVgVZ6n8Rqg00rFCy9_NGM0rpx95poDaw</sessionId></sfns:SessionHeader></se:Header><se:Body><query xmlns="urn:partner.soap.sforce.com" xmlns:ns1="sobject.partner.soap.sforce.com"><queryString>SELECT Id, Name FROM VIV_Resource__c</queryString></query></se:Body></se:Envelope>"
clientId = (null)
contentType = "text/xml; charset=UTF-8"
destination = "DefaultHTTP"
headers = (Object)#8
DSEndpoint = "direct_http_channel"
httpHeaders = (Object)#9
Accept = "text/xml"
SOAPAction = """"
X-Salesforce-No-500-SC = "true"
messageId = "5EA262D6-489B-EAE5-AC61-E4A9F33B3F83"
method = "POST"
recordHeaders = false
timestamp = 0
timeToLive = 0
url = "https://cs2-api.salesforce.com/services/Soap/u/14.0/00DR00000008CLA?1000.5822666748427"
responders = (Array)#10
[0] (::SalesForceResponder)#11
result = (null)
type = "fault"

.... well, the login did go right this time!

Anyone got a fix for this 1, or is it simply impossible to run a flash integration from an external site?

I also put the swf inside a visual force page on the sandbox now, and there it does work. So Rajarak, thanks for fixing that!