To one who knows this is output from first update:
[2015-04-21 15:11:20.432501] MSI (04): Property(S): Action_OnStageNormal = <actionslist uilevel="2"/>
[2015-04-21 15:11:20.432501] MSI (04): Property(S): Action_OnStagePostinstall = <actionslist uilevel="2"/>
[2015-04-21 15:11:20.432501] MSI (04): Property(S): Action_OnStagePreinstall = <actionslist uilevel="2"/>
[2015-04-21 15:11:20.432501] MSI (04): Property(S): SOURCEDIR = C:\ParallelsInstaller\parallels\PANEL-WIN_12.0.18\dist-msi-Microsoft-2003-i386\
[2015-04-21 15:11:20.432501] MSI (04): Property(S): SourcedirProduct = {85343B4E-B240-4B6A-AAEB-0DDDB7BFC1DD}
[2015-04-21 15:11:20.432501] MSI (04): Property(S): ProductToBeRegistered = 1
[2015-04-21 15:11:20.432501] MSI (04): === Logging stopped: 21.4.2015 15:11:20 ===
[2015-04-21 15:11:20.448127] Package action: InstallMsiPackage, package: mysql, exec time: 16.219 sec. desc: file='C:\ParallelsInstaller\parallels\PANEL-WIN_12.0.18\dist-msi-Microsoft-2003-i386\mysql-admin.msi', command-line='ADDLOCAL=ALL ALLUSERS=1 ARPSYSTEMCOMPONENT=1 REBOOT=R'
[2015-04-21 15:11:20.463753] Failed to install 'C:\ParallelsInstaller\parallels\PANEL-WIN_12.0.18\dist-msi-Microsoft-2003-i386\mysql-admin.msi': Fatal error during installation. (Error code 1603)[2015-04-21 15:11:20.463753]
[2015-04-21 15:11:20.463753] Action '<install-msi-package command-line="ADDLOCAL=ALL ALLUSERS=1 ARPSYSTEMCOMPONENT=1 REBOOT=R" />' failed with error 1603(0x00000643)[2015-04-21 15:11:20.463753]
[2015-04-21 15:11:20.479379] FileFetcher: get file (~empty)/PANEL-WIN_12.0.18/panel-12.0.18-ms_w2k12-x86_64.inf3
[2015-04-21 15:11:20.916906] FileFetcher: get file (~empty)/SITEBUILDER-WIN_12.0.7/sitebuilder-12.0.7-ms-noarch.inf3
[2015-04-21 15:11:21.463816] FileFetcher: get file (~empty)/BILLING-WIN_12.0.18/billing-12.0.18-ms-noarch.inf3
[2015-04-21 15:11:21.901348] Error: The installation of the package 'mysql' failed with code 1603. (upgrade: upgrading Parallels Panel SQL server...)
Not all packages were installed.
Please, contact product technical support.
To one who knows this is output from second update:
[2015-04-21 17:30:22.615969] MSI (04): Property(S): SOURCEDIR = C:\ParallelsInstaller\parallels\SITEBUILDER-WIN_12.0.7\dist-msi-Microsoft-2003-i386\
[2015-04-21 17:30:22.615969] MSI (04): Property(S): SourcedirProduct = {960C60A5-93F5-4720-95F6-E49DF30BBCD7}
[2015-04-21 17:30:22.615969] MSI (04): === Logging stopped: 21.4.2015 17:30:22 ===
[2015-04-21 17:30:22.631595] Package action: InstallMsiPackage, package: sitebuilder-core, exec time: 84.974 sec. desc: file='C:\ParallelsInstaller\parallels\SITEBUILDER-WIN_12.0.7\dist-msi-Microsoft-2003-i386\sitebuilder-core.msi', command-line='ADDLOCAL=ALL ALLUSERS=1 ARPSYSTEMCOMPONENT=1 REBOOT=R'
[2015-04-21 17:30:22.631595] Failed to install 'C:\ParallelsInstaller\parallels\SITEBUILDER-WIN_12.0.7\dist-msi-Microsoft-2003-i386\sitebuilder-core.msi': Fatal error during installation. (Error code 1603)[2015-04-21 17:30:22.631595]
[2015-04-21 17:30:22.631595] Action '<install-msi-package command-line="ADDLOCAL=ALL ALLUSERS=1 ARPSYSTEMCOMPONENT=1 REBOOT=R" />' failed with error 1603(0x00000643)[2015-04-21 17:30:22.631595]
[2015-04-21 17:30:22.647220] FileFetcher: get file (~empty)/PANEL-WIN_12.0.18/panel-12.0.18-ms_w2k12-x86_64.inf3
[2015-04-21 17:30:23.084752] FileFetcher: get file (~empty)/SITEBUILDER-WIN_12.0.7/sitebuilder-12.0.7-ms-noarch.inf3
[2015-04-21 17:30:23.475408] FileFetcher: get file (~empty)/BILLING-WIN_12.0.18/billing-12.0.18-ms-noarch.inf3
[2015-04-21 17:30:23.912925] Error: The installation of the package 'sitebuilder-core' failed with code 1603. (upgrade: upgrading Parallels Presence Builder Core...)
Not all packages were installed.
Please, contact product technical support.