Normally gmStudio is started from an Icon, or a gmProj file and the OS finds the executable and starts the process. gmStudio also needs to know the folder where the running executable is located so it can find system configuration files. It can be difficult to find this location at runtime, so the folder location is stored in the registry. However, in special cases, a users might want to run a specific version of gmStudio rather than the last one installed and in that case, the location of the system configuration files can be determined by the Application.StartupPath. The steps for running a specific version of gmStudio other than the installed version are as follows:
1) Select the desired MSI
2) Extract MSI to location using msiexec /a; for example:
msiexec /a gmStudioSetup.msi /qb /l* 1install.log TARGETDIR=c:\temp\gmStudio
3) If running a version prior to October 2017 release, edit gmStudio.cfg edit install folder to the location where you unpacked the files
"%AppExeFolder% -> install location
4) run gmStudio using the custom CFG
c:\temp\gmStudio\gmStudio.exe /CFG=c:\temp\gmStudio\gmStudio.cfg
MSIEXEC Command Line
Windows ® Installer. V 5.0.7601.23593 msiexec /Option <Required Parameter> [Optional Parameter] Install Options </package | /i> <Product.msi> Installs or configures a product /a <Product.msi> Administrative install - Installs a product on the network (unpack only?) /j<u|m> <Product.msi> [/t <Transform List>] [/g <Language ID>] Advertises a product - m to all users, u to current user </uninstall | /x> <Product.msi | ProductCode> Uninstalls the product Display Options /quiet Quiet mode, no user interaction /passive Unattended mode - progress bar only /q[n|b|r|f] Sets user interface level n - No UI b - Basic UI r - Reduced UI f - Full UI (default) /help Help information Restart Options /norestart Do not restart after the installation is complete /promptrestart Prompts the user for restart if necessary /forcerestart Always restart the computer after installation Logging Options /l[i|w|e|a|r|u|c|m|o|p|v|x|+|!|*] <LogFile> i - Status messages w - Nonfatal warnings e - All error messages a - Start up of actions r - Action-specific records u - User requests c - Initial UI parameters m - Out-of-memory or fatal exit information o - Out-of-disk-space messages p - Terminal properties v - Verbose output x - Extra debugging information + - Append to existing log file ! - Flush each line to the log * - Log all information, except for v and x options /log <LogFile> Equivalent of /l* <LogFile> Update Options /update <Update1.msp>[;Update2.msp] Applies update(s) /uninstall <PatchCodeGuid>[;Update2.msp] /package <Product.msi | ProductCode> Remove update(s) for a product Repair Options /f[p|e|c|m|s|o|d|a|u|v] <Product.msi | ProductCode> Repairs a product p - only if file is missing o - if file is missing or an older version is installed (default) e - if file is missing or an equal or older version is installed d - if file is missing or a different version is installed c - if file is missing or checksum does not match the calculated value a - forces all files to be reinstalled u - all required user-specific registry entries (default) m - all required computer-specific registry entries (default) s - all existing shortcuts (default) v - runs from source and recaches local package Setting Public Properties [PROPERTY=PropertyValue] Consult the Windows ® Installer SDK for additional documentation on the command line syntax. Copyright © Microsoft Corporation. All rights reserved. Portions of this software are based in part on the work of the Independent JPEG Group.