Error restoring opmanger path not found

HI
We are trying to restore opmanager on new machine when moving from free version to 30 trial.
When runnig restoredb.bat with backup file we get this error message:

java.io.IOException: The system cannot find the path specified
at java.io.WinNTFileSystem.createFileExclusively(Native Method)
at java.io.File.createNewFile(Unknown Source)
at jdbc.RestoreBackup.deCompressData(RestoreBackup.java:963)
at jdbc.RestoreBackup.main(RestoreBackup.java:1133)
Backup File does't exist. Please verify the file name.
java.lang.NullPointerException
at jdbc.RestoreBackup.deCompressData(RestoreBackup.java:974)
at jdbc.RestoreBackup.main(RestoreBackup.java:1133)
Exception in thread "main" java.lang.NullPointerException
at java.lang.Throwable.printStackTrace(Unknown Source)
at jdbc.RestoreBackup.deCompressData(RestoreBackup.java:994)
at jdbc.RestoreBackup.main(RestoreBackup.java:1133)
Press any key to continue . . .

Any help will be appreciated