When I try to Run (install?) a software I have downloaded I get a popup message that says " Command line option syntax error. Type Command /? " Nothing will install. Help.

When I try to Run (install?) a software I have downloaded I get a popup message that says " Command line option syntax error. Type Command /? " Nothing will install. Help.What did you download?This error can be caused if there are spaces in the path to the location where the install file is stored.Create a folder in the root of your C drive and call it tmp --> C:\tmpPut the install file that you downloaded into C:\tmp and try to execute it.Also, run Disk Cleanup (Start > Run > cleanmgr.exe > OK) and have it clean your Temporary Files and Temporary Internet Files (at least).