Attempted to import c2 project, c3 fails

Error report information
Type: unhandled rejection
Reason: Error: help URL must begin with http:// or https:// @ Error: help URL must begin with http:// or https:// at window.!fm.!QY$ (https://editor.construct.net/r98/main.js:63:485048) at new window.Plugin (https://editor.construct.net/r98/main.js:63:495819) at new window.!QAv (https://editor.construct.net/r98/main.js:63:501620) at Function.!c.!h (https://editor.construct.net/r98/main.js:2:138656) at a.!qc (https://editor.construct.net/r98/main.js:74:28632) at Object.t.push.!c.!dc [as !nSG] (https://editor.construct.net/r98/main.js:74:29042) at t (https://editor.construct.net/r98/main.js:2:198941) at n (https://editor.construct.net/r98/main.js:2:198727)
Stack: Error: help URL must begin with http:// or https:// at window.!fm.!QY$ (https://editor.construct.net/r98/main.js:63:485048) at new window.Plugin (https://editor.construct.net/r98/main.js:63:495819) at new window.!QAv (https://editor.construct.net/r98/main.js:63:501620) at Function.!c.!h (https://editor.construct.net/r98/main.js:2:138656) at a.!qc (https://editor.construct.net/r98/main.js:74:28632) at Object.t.push.!c.!dc [as !nSG] (https://editor.construct.net/r98/main.js:74:29042) at t (https://editor.construct.net/r98/main.js:2:198941) at n (https://editor.construct.net/r98/main.js:2:198727)
Construct 3 version: r98
URL: https://editor.construct.net/
Date: Mon Jun 04 2018 20:08:54 GMT+1000 (Tasmania Standard Time)
Uptime: 3.9 s

Platform information
Browser: Chrome
Browser version: 66.0.3359.181
Browser engine: Blink
Browser architecture: 64-bit
Context: browser
Operating system: Windows
Operating system version: 10
Operating system architecture: 64-bit
Device type: desktop
Device pixel ratio: 1
Logical CPU cores: 4
Approx. device memory: 8 GB
User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/66.0.3359.181 Safari/537.36
C3 release: r98 (stable)
Language setting: en-US

WebGL information
Version string: WebGL 2.0 (OpenGL ES 3.0 Chromium)
Numeric version: 2
Supports NPOT textures: yes
Supports GPU profiling: no
Vendor: Google Inc.
Renderer: ANGLE (AMD Radeon (TM) R9 390 Series Direct3D11 vs_5_0 ps_5_0)
Major performance caveat: no
Maximum texture size: 16384
Point size range: 1 to 1024
Extensions: EXT_color_buffer_float, EXT_texture_filter_anisotropic, OES_texture_float_linear, WEBGL_compressed_texture_s3tc, WEBGL_compressed_texture_s3tc_srgb, WEBGL_debug_renderer_info, WEBGL_debug_shaders, WEBGL_lose_context