If your current language interface is still readable enough to navigate, this is easiest.

: If you also need to change measurement units (e.g., from Metric to Imperial), you can do so in the same Preferences menu by selecting the desired unit from the drop-down list. Specific Device Variants

General Users / Technical Support Date: [Current Date] Subject: Methods to change the user interface language in Pro100 (version 5.x and later)

| Problem | Likely Fix | |---------|-------------| | Language dropdown is disabled | Your version is locked (e.g., educational/trial). Full license required. | | Changing .ini does nothing | File is overwritten at launch. Set file to after editing. | | English is missing entirely | Download English language pack separately. | | Interface becomes mixed (Russian + English) | Clear cache: delete cache.dat in Pro100 user folder. | | After change, menus are blank/fonts broken | Reinstall or repair Microsoft Visual C++ Redistributables. |

Let’s break down why this happens, the three distinct methods to fix it, and which one will actually save your project.