MQL4 installed in the disk C is necessary? - page 3

 
This update makes no sense. Now there is atleast two locations for indicators and experts. How do we know which location is the "active one"???
 
the one it's located in the MQL4/...  folder
 
luckyluke72:
This update makes no sense. Now there is atleast two locations for indicators and experts. How do we know which location is the "active one"???

MT4 is just complying with Windows UAC guidlines and the Windows app certification rules by doing that. Installation files that are not to be modified are installed in program Files. Other Files are stored in App Data directory.

MT4 > File > Open Data Folder.