NSIS - Installer for SDK 1.5.0 and ShowTool failed.

Greetings.

The new TGE SDK v1.5.0 Win32 installer (NullSoft Install System v2.21)
(TorqueGameEngineSDK-1-5-0.exe) fails with an anoying 'NSIS Error' MB
that reads 'The installer you are trying to use is corrupted or incomplete (...)'.
The file is OK (72.4 MB, 75931689 Bytes) and runs with an '/NCRC' flag
specified at a command line. The same happens with the TGE ShowTool Pro
Win32 installer. But, in this case, the exceutable installed (TorqueShowToolPro.exe)
doesn't run, is not a valid Win32 executable.

Can anyone help? Can someone at GarageGames verify the
integrity of the files uploaded to the website?

Thanks.

Best regards,

Rui Bras