# Runtime error on first start
**URL:** https://community.mp3tag.de/t/runtime-error-on-first-start/67970
**Category:** Support
**Created:** [March 25, 2025, 7:57pm UTC](https://community.mp3tag.de/t/runtime-error-on-first-start/67970 "2025-03-25T19:57:40Z")
**Posts on this page:** 6
**Page:** 1
### Author:  [@terrybooth](https://community.mp3tag.de/u/terrybooth)
#### Post date: [March 25, 2025, 7:57pm UTC](https://community.mp3tag.de/t/runtime-error-on-first-start/67970/1 "2025-03-25T19:57:40Z")
Hi
Installation goes OK but on launching Mp3Tag it crashes.
Re-installed several times but same result.
```auto
Run Time Error 633
This is the Error Log:
================================================================================
Mp3tag v3.28 - 25.03.2025 - 19:51:56
--------------------------------------------------------------------------------
OS-Version: Windows 11 (build 26100), 64-bit
--------------------------------------------------------------------------------
Build: Nov 15 2024 20:21:33 (32-bit)
--------------------------------------------------------------------------------
AppPath: 842.003.042.304 Bytes frei (C:\Program Files (x86)\Mp3tag\)
DataPath: 842.003.042.304 Bytes frei (C:\Users\terry\AppData\Roaming\Mp3tag\data\)
TempPath: 842.003.042.304 Bytes frei (C:\Users\terry\AppData\Local\Temp\Mp3tag v3.28\)
================================================================================
================================================================================
ERROR
--------------------------------------------------------------------------------
File: y:\projects\_wnd\sframewnd.cpp
Line: 633
Expression: nIdx == nIdx2
LastError: 0x00000000 The operation completed successfully.
--------------------------------------------------------------------------------
THROW
--------------------------------------------------------------------------------
File: y:\projects\_wnd\sframewnd.cpp
Line: 641
--------------------------------------------------------------------------------
CATCH
--------------------------------------------------------------------------------
File: y:\projects\mp3tag\mtmainframe.cpp
Line: 845
================================================================================
================================================================================
ERROR
--------------------------------------------------------------------------------
File: y:\projects\_wnd\smenu.cpp
Line: 1269
Expression: hIcon != NULL
LastError: 0x00000000 The operation completed successfully.
--------------------------------------------------------------------------------
THROW
--------------------------------------------------------------------------------
File: y:\projects\_wnd\smenu.cpp
Line: 1353
--------------------------------------------------------------------------------
THROW
--------------------------------------------------------------------------------
File: y:\projects\mp3tag\mtmainframe.cpp
Line: 1388
--------------------------------------------------------------------------------
THROW
--------------------------------------------------------------------------------
File: y:\projects\mp3tag\mt.cpp
Line: 338
--------------------------------------------------------------------------------
CATCH
--------------------------------------------------------------------------------
File: y:\projects\mp3tag\mt.cpp
Line: 417
```
---
### Author:  [@Florian](https://community.mp3tag.de/u/Florian)
#### Post date: [March 25, 2025, 8:09pm UTC](https://community.mp3tag.de/t/runtime-error-on-first-start/67970/2 "2025-03-25T20:09:12Z")
Does restarting your computer resolve the issue?
---
### Author:  [@terrybooth](https://community.mp3tag.de/u/terrybooth)
#### Post date: [March 26, 2025, 1:34pm UTC](https://community.mp3tag.de/t/runtime-error-on-first-start/67970/3 "2025-03-26T13:34:16Z")
Hi
Not at all. Have removed, closed down PC and re-installed trying both 64 and 32bit with no joy,
---
### Author:  [@Florian](https://community.mp3tag.de/u/Florian)
#### Post date: [March 26, 2025, 2:16pm UTC](https://community.mp3tag.de/t/runtime-error-on-first-start/67970/4 "2025-03-26T14:16:33Z")
OK, thanks for trying. The errors seem to happen because Mp3tag fails to create handles, which are a limited system resource.
Are you using some kind of shell replacement, theming software, or anything else that makes your installation of Windows 11 somewhat special?
---
### Author:  [@Florian](https://community.mp3tag.de/u/Florian)
#### Post date: [March 31, 2025, 12:41pm UTC](https://community.mp3tag.de/t/runtime-error-on-first-start/67970/5 "2025-03-31T12:41:11Z")
We were in parallel conversation via email and found out that WindowBlinds — which serves as a kind of shell replacement / theming option for Windows — was recently updated and does not play nicely with Mp3tag.
Users of WindowBlinds can still use Mp3tag by holding the Ctrl key down when opening the app. This prevents WindowBlinds from theming the app.
---
### Author:  [@system](https://community.mp3tag.de/u/system)
#### Post date: [April 30, 2025, 12:42pm UTC](https://community.mp3tag.de/t/runtime-error-on-first-start/67970/6 "2025-04-30T12:42:10Z")
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