when you click on Sqlnexus.application, you get error "cannot continue, the application is improeprly formatted" error. if you click on details, you will see the following:



PLATFORM VERSION INFO
Windows : 5.2.3790.131072 (Win32NT)
Common Language Runtime : 2.0.50727.1433
System.Deployment.dll : 2.0.50727.1433 (REDBITS.050727-1400)
mscorwks.dll : 2.0.50727.1433 (REDBITS.050727-1400)
dfdll.dll : 2.0.50727.1433 (REDBITS.050727-1400)
dfshim.dll : 2.0.50727.1433 (REDBITS.050727-1400)

SOURCES
Deployment url : file:///C:/sqlnexus%5B1%5D.2.5.0.2/sqlnexus.application

ERROR SUMMARY
Below is a summary of the errors, details of these errors are listed later in the log.
* Activation of C:\sqlnexus1.2.5.0.2\sqlnexus.application resulted in exception. Following failure messages were detected:
+ Exception reading manifest from file:///C:/sqlnexus%5B1%5D.2.5.0.2/sqlnexus.application: the manifest may not be valid or the file could not be opened.
+ Manifest XML signature is not valid.
+ No signature was present in the subject.


COMPONENT STORE TRANSACTION FAILURE SUMMARY
No transaction error was detected.

WARNINGS
There were no warnings during this operation.

OPERATION PROGRESS STATUS
* 3/10/2008 12:03:27 PM : Activation of C:\sqlnexus1.2.5.0.2\sqlnexus.application has started.

ERROR DETAILS
Following errors were detected during this operation.
* 3/10/2008 12:03:27 PM System.Deployment.Application.InvalidDeploymentException (ManifestParse)
- Exception reading manifest from file:///C:/sqlnexus%5B1%5D.2.5.0.2/sqlnexus.application: the manifest may not be valid or the file could not be opened.
- Source: System.Deployment
- Stack trace:
at System.Deployment.Application.ManifestReader.FromDocument(String localPath, ManifestType manifestType, Uri sourceUri)
at System.Deployment.Application.DownloadManager.DownloadDeploymentManifestDirectBypass(SubscriptionStore subStore, Uri& sourceUri, TempFile& tempFile, SubscriptionState& subState, IDownloadNotification notification, DownloadOptions options, ServerInformation& serverInformation)
at System.Deployment.Application.DownloadManager.DownloadDeploymentManifestBypass(SubscriptionStore subStore, Uri& sourceUri, TempFile& tempFile, SubscriptionState& subState, IDownloadNotification notification, DownloadOptions options)
at System.Deployment.Application.ApplicationActivator.PerformDeploymentActivation(Uri activationUri, Boolean isShortcut, String textualSubId, String deploymentProviderUrlFromExtension)
at System.Deployment.Application.ApplicationActivator.ActivateDeploymentWorker(Object state)
--- Inner Exception ---
System.Deployment.Application.InvalidDeploymentException (SignatureValidation)
- Manifest XML signature is not valid.
- Source: System.Deployment
- Stack trace:
at System.Deployment.Application.Manifest.AssemblyManifest.ValidateSignature(Stream s)
at System.Deployment.Application.ManifestReader.FromDocument(String localPath, ManifestType manifestType, Uri sourceUri)
--- Inner Exception ---
System.Security.Cryptography.CryptographicException
- No signature was present in the subject.

- Source: System.Deployment
- Stack trace:
at System.Deployment.Internal.CodeSigning.SignedCmiManifest.Verify(CmiManifestVerifyFlags verifyFlags)
at System.Deployment.Application.Manifest.AssemblyManifest.ValidateSignature(Stream s)

COMPONENT STORE TRANSACTION DETAILS
No transaction information is available.


solution:
sqlnexus.application is used for ClickOnce. Since codeplex doesn't support clickonce, you can't use this file. all you need to do is to just run sqlnexus.exe to launch the program