1- Go to https://my301507.crm.ondemand.com2- On Login page right click and select only option displayed as Silver light .3- Select Application storage tab as displayed in below shot-4- Select the url for crm application.5- Delete cache installed on your system.6- Again go to https://my301507.crm.ondemand.com .

2- If incase you are not able to open the Silver light Window then please follow the below path and get the version as below-C:\Program Files\Microsoft Silverlight\

3- Now your should be able to get the version as below-

After getting the version installed on your system replace this below Version text in below path with correct version as below-C:\Program Files\Microsoft Silverlight\{Version}\Silverlight.Configuration.exeexample below-C:\Program Files\Microsoft Silverlight\5.1.30514.0\Silverlight.Configuration.exe4- Now go to start-> run and paste this similar path as above (in blue) and hit enter.

4- Go to Application Storage tab and follow the step defined in step #1.