"Some anti-virus software programs mark LSPDFR and/or RAGEPluginHook as a virus. This is known as a false-positive. LSPDFR and RAGEPluginHook make extensive use of memory hooking to achieve a lot of what they do, which can look malicious to anti-virus software. If your anti-virus marks LSPDFR/RPH as unsafe or you have odd issues running LSPDFR/RPH, you will either need to exclude LSPDFR and RPH's files (refer to your antivirus documentation for more details) or you will have to disable the anti-virus software." - from the LSPDFR download page