The file e645a.dll belongs to the InstallShield program. InstallShield is a program that is used to create installers for software. It was the leading installation program for Windows until Microsoft started encouraging developers to use the built-in Windows Installer. Many programs still use InstallShield, and the odds are good that at least one program on your computer was installed with this technology.
An error with this file usually means that the file has been moved or corrupted, and the registry has not been updated with the change. To fix the problem, you can attempt to locate the file and check it for damage, and then put it into the spot the registry thinks it belongs. You might try editing the registry, but that’s not a good idea unless you are an expert as you can disable your computer if you make a mistake while editing the registry.
A better choice is to run ZookaWare PC Cleaner to find and fix the problem for you. ZookaWare PC Cleaner guarantees that we will fix 100% of the registry errors on your computer.