Hey Ashley,
I've tested this on new directories and with different projects. I'm running v266.
The error message is as follows:
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Construct 2 Check failure
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Check failure! This is probably a bug:
An image file was not successfully exported
Condition: FileExists(job.dest_file.c_str())
File: html5.cpp
Line: 3836
Function: void __cdecl DoImageProcessingJob(const struct ImageProcessingJob &)
Build: release 266 (64-bit) checked
Component: HTML5 exporter
(Last Win32 error: 3)
You are using a 'checked' release of Construct 2, intended for testing, which causes certain errors to be reported this way. Hit Ctrl+C to copy this messagebox - it's useful information for the developers, so please include it with any bug reports! Click 'Abort' to quit (unsaved data will be lost!),'Retry' to turn off messages for this session and continue, or 'Ignore' to continue normally.
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Abort Retry Ignore
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I get the error twice and then Construct 2 completely crashes.