Cannot install SOAPUI 4.0.1

I also cannot install SOAPUI 4.0.1, but for different reasons. For the developer's convenience, I've taken screenshots of the error messages.









It also returned the following error message in a text file:

java.io.IOException: Cannot run program "C:\Windows\system32\cmd.exe" (in directory "C:\Program Files (x86)\SmartBear\soapUI-4.0.1\bin"): CreateProcess error=267, The directory name is invalid
 at java.lang.ProcessBuilder.start(Unknown Source)
 at java.lang.Runtime.exec(Unknown Source)
 at java.lang.Runtime.exec(Unknown Source)
 at com.install4j.runtime.installer.helper.LaunchHelper.launchOnWindows(Unknown Source)
 at com.install4j.runtime.installer.helper.LaunchHelper.launchApplication(Unknown Source)
 at com.install4j.runtime.installer.helper.LaunchHelper.launchFinishExecutable(Unknown Source)
 at com.install4j.runtime.beans.actions.finish.ExecuteLauncherAction.execute(Unknown Source)
 at com.install4j.runtime.beans.actions.SystemInstallOrUninstallAction.install(Unknown Source)
 at com.install4j.runtime.installer.InstallerContextImpl.performActionInt(Unknown Source)
 at com.install4j.runtime.installer.ContextImpl.performAction(Unknown Source)
 at com.install4j.runtime.installer.controller.Controller.executeActions(Unknown Source)
 at com.install4j.runtime.installer.controller.Controller.handleCommand(Unknown Source)
 at com.install4j.runtime.installer.controller.Controller.start(Unknown Source)
 at com.install4j.runtime.installer.Installer.main(Unknown Source)
 at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
 at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
 at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
 at java.lang.reflect.Method.invoke(Unknown Source)
 at com.exe4j.runtime.LauncherEngine.launch(Unknown Source)
 at com.exe4j.runtime.WinLauncher.main(Unknown Source)
Caused by: java.io.IOException: CreateProcess error=267, The directory name is invalid
 at java.lang.ProcessImpl.create(Native Method)
 at java.lang.ProcessImpl.<init>(Unknown Source)
 at java.lang.ProcessImpl.start(Unknown Source)
 ... 20 more

I would greatly appreciate any and all help that anyone can offer me. Thank you for your time.