I have a sketch which compiles and runs fine using the Arduino IDE. In VisualMicro it compiles and uploads but crashes (with a stack dump to the com port) after running a few lines of code.
The only relevant thing that's changed since this started happening is that I downgraded the ESP8266 core from 2.4.0 to 2.3.0 (because of a known problem with WiFi reconnection in 2.4.0).
In VM I have 'rescanned toolchains and libraries' and have restarted the IDE, but still the same problem. What else do I need to do?

I hadn't tried release mode, sorry. It runs OK there.
Verbose file attached. Below is crash report, if that's useful? Last correct output is 'parasite power on'

Opening port
Port open
Dallas Temperature Library Version: 3.7.9


Found 3 devices.
Parasite power is: ON

Soft WDT reset

ctx: cont
sp: 3ffefb40 end: 3ffefda0 offset: 01b0

>>>stack>>>
3ffefcf0:  3ffefd50 00000001 00000100 40203cf5
3ffefd00:  00000000 00000008 3ffeec24 40203ecd
3ffefd10:  3ffeebf0 00000001 00000007 00000001
3ffefd20:  00000000 00000002 3ffefde4 40204589
3ffefd30:  3ffe8a94 3ffeec08 3ffefde4 00000002
3ffefd40:  3ffeebf0 3ffeec08 00000000 402037c6
3ffefd50:  1e0a4f28 b500000a 3ffefde4 3ffeed6c
3ffefd60:  3fffdad0 3ffeec08 3ffefde4 4020224b
3ffefd70:  3fffdad0 3ffefde4 3ffeec5c 40202475
3ffefd80:  feefeffe 00000000 3ffeed64 40204194
3ffefd90:  feefeffe feefeffe 3ffeed80 40100718
<<<stack<<<

ets Jan  8 2013,rst cause:2, boot mode:(1,7)


ets Jan  8 2013,rst cause:4, boot mode:(1,7)

wdt reset

Port closed

 

No break points set.
Have done some more testing. It is crashing at the third line in this section:

	sensors.getAddress(insideTemp, 0);
	sensors.getAddress(outsideTemp, 1);
	sensors.getAddress(fridgeTemp, 2); 

'sensors' is  an object of theDallasTemperature library class; 'getAddress()' is one of the library functions. 
I have 3 Dallas sensors fitted; if I omit the request for the third address the code does not crash! And still does not crash if run in release mode, even with all 3 sensors.
Dallas library is 3.7.9. There is a version 3.8 but that's giving me a 'file not found' error so had to go back to 3.7.9

Tim@Visual Micro wrote on Feb 26^th, 2018 at 1:21pm:

No, they have a propreitry 'oneWire' protocol : https://datasheets.maximintegrated.com/en/ds/DS18B20.pdf
'Scan I2C at startup' is false.

Yes; in fact all debug settings are at default; I haven't yet used any debugging features since re-installing VMicro last week.