Like several other users I'm experiencing the 'invisible breakpoint' bug in 4.13 (both build 522 and 524, duly reported to but so far not acknowledged by the development team).
The problem seems to be machine dependent - here only on one out of three computers AVRStudio shows this behaviour (all systems run XP SP2 with the current hotfixes installed).
- 'F9' or clicking the 'toggle breakpoint' icon will set a breakpoint, but the symbol doesn't show up in the side bar.
- Even though this 'invisible breakpoint' works, the associated 'Breakpoints and Tracepoints' window internally isn't activated - it is available in the UI window selection options, but will show the previous window's content or else stays empty when moved to a different location.
- 'Reload file' causes the symbol(s) of set breakpoints to appear once: toggling an individual breakpoint off and on makes it invisible again, but even after 'reloading' the breakpoint(s) won't show up in the 'Breakpoints and Tracepoints' window.
I'm wondering if there might be a common denominator for the systems which have this bug - .NET frameworks installed (#3 on the machine which has the bug), graphics driver (NVIDIA 93.71), whatever ... I'd appreciate any feedback and ideas.
[Edit] Changed tag line