Hi Nihar,
Here the system couldn't find the Form-designer installed on your system.
You should check the version of your Adobe document services(ADS)
Try TA SE38 and search for FP_PDF_TEST_00.
This check the ADS. The answere is the version of the ADS. In case of 10.4, you should install 10.4 Adobe LiveCycle Designer(ALD) at your local PC with the SAP GUI Patch.
The Version should be paaring. So 8.1 returns from Report and ADS connection, you should use ALD 8.1 with SP2 or higher.
For a clean reinstall, open the Installation and de-marc the installation-point in the setup. This reinstall the ALD on your PC. Restart your machine and try the installation again.
If you have futher questions, ask me.
regards, Jeremia Girke