ERROR when custom action call MSIEXEC

[binoco]

Hello!!

I wrote a script function:
function RemoveMySQL(hMSI)
begin
if(LaunchAppAndWait(WINSYSDIR^"msiexec.exe","/uninstall \"" + INSTALLDIR^"mysql.msi" + "\"",LAAW_OPTION_WAIT)< 0) then
MessageBox ("Unable Remove My SQL.",SEVERE);
abort;
endif;
end;

And then, I add custom action to call above function.
If I add it to UI sequence then it's OK. But if I add it to Exec sequence then it's Error when run.

Error content : another installer is running. waitting for it finish.

In my task manager, it has 2 processes of msiexec.exe.

pls, help me!

[J_anitha]

In execute sequence, msiexec process is being used by your program. So if you try to use it again, it will ofcourse give an error. I don't think it's possible to make two instances of msiexec.exe run at the same time.

[binoco]

have any way to setup MySQL in Installscript MSI project?

I am new study installshield

[duannt1]

I also get a isue as you but I can not solve this isue.
Please help us!

[duannt1]

I think In:) .msi file of MySQL have used msiexec to call another components.
So you use msiexec to call .msi file of MySQL ==> duplicate use msiexec

[reachyouvenkat7]

Hi,
As windows installer 3.1 will not allow two instances of MSIEXEC at a time, because of this you are facing error. This type of behavior will be called as NETSTED MSI installation. We can puase the main installation till the time when the netsted installation is in progress. Please follow up netsted installation behaviour.