I am using Magento CE 1.9 and trying to install security patch SUPEE-1533 but it's giving me this error:
Checking if patch can be applied/reverted successfully...
ERROR: Patch can't be applied/reverted successfully.
patching file app/code/core/Mage/Adminhtml/Block/Dashboard/Graph.php
Reversed (or previously applied) patch detected! Assume -R? [n]
Apply anyway? [n]
Skipping patch.
1 out of 1 hunk ignored -- saving rejects to file app/code/core/Mage/Adminhtml/Block/Dashboard/Graph.php.rej
patching file app/code/core/Mage/Adminhtml/controllers/DashboardController.php
Reversed (or previously applied) patch detected! Assume -R? [n]
Apply anyway? [n]
Skipping patch.
1 out of 1 hunk ignored -- saving rejects to file app/code/core/Mage/Adminhtml/controllers/DashboardController.php.rej