Ista 4.39.20 Install -

Run C:\EC-Apps\ISTA\ISTA\Installers\WindowsInstaller\NDP472-KB4054530-Web.exe (.NET Framework 4.7.2) Run C:\EC-Apps\ISTA\ISTA\Installers\DirectX\DXSETUP.exe

Merge the following into a .reg file and execute: ista 4.39.20 install

Extract the SDP archive to: C:\EC-Apps\ISTA\ISTA\SDP\ Note: This step takes 30–60 minutes due to the large number of small files. ista 4.39.20 install

4.39.20 Release Date: (Circa Q2/Q3 2024 – adjust based on actual timeline ) Type: Standalone / SQLiteDBs ista 4.39.20 install

Extract SQLiteDBs_EN_4.39.20 directly into: C:\EC-Apps\ISTA\ISTA\SQLiteDBs\EN Overwrite if prompted.

ISTA / Rheingold 4.39.20 – Installation Guide & Notes