Hy ...I have the same problem when i load a new indicator ... first time when i open MT4 it takes long time then all back to normal :) ... so be patient first time ... i think it take some time to background-compile the new indicator.
qjol:
mt4 folder\profilel\your profile (or default)
or go to mt4 folder\profilel\your profile (or default)\ & edit the chart(xx).chr & delete the indicator & settings from the file
I enter to mt4 folder\profilel\default, and there are 5 files:
chart01.CHR,
chart02.CHR,
chart03.CHR,
chart04.CHR,
order.wnd.
which one do I have to delete? alls?
Thanks
trader201
edit the files one by one & u will c what file contains the indicator u uploaded (now u have 2 options or delete the file or delete a few lines that uploading the indicator (& of course u can delete all the files))

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Few days ago I opened, in MT4, a custom indicator loaded from a forum. Since that moment, the MT4 have problems opening (do not open). I used the repair function, and uninstall and reinstall the program, several times, and still have the same problem.
Why this is happening and what can I do to fix it?
Thanks
Trader201