Disconnected (90001) during 4-star craft, lost all my mats

Time: 9/29/2016, between 2 and 3:15 CDT (I submitted ticket #6429995 within 10 minutes, but there is no time stamp. I was directed several hours later to submit this on the official forums)
Frequency: Once
World name: Balmung
Character name: Eden Winterspire
Retainer name: None
NPC name: None
Monster name: None
Class/Level: Blacksmith 60
Party or solo: Solo
In-game time: Uncertain (see note for Time above)
Area and coordinates: Lavender Beds, appx. (12, 11) (Near Plot 12, 1st Ward)
Housing: Lavender Beds, appx. (12, 11) (Near Plot 12, 1st Ward) Not Housing related
Steps:
1. I was crafting a Heavy Metal War Axe using 3 Heavy Metal Ingots (High Quality), 1 Teak Lumber (High Quality), 1 Scintallant Ingot (High Quality), 2 Saurian Leather (Normal Quality), 4 Battlecraft Demimateria III, and 5 Demicrystals. I was not using any crafting macros.
2. Maker's Mark
3. Comfort Zone
4. Steady Hand
5. Piece by Piece
6. Piece by Piece
7. An uncertain number of Flawless Synthesis
8. I had paused my Flawless Synthesis before the stacks from Maker's Mark expired to calculate how many I would need to succeed at in order to be able to complete my planned craft based on my rotation for increasing quality, and the screen went black, and I received a Code 90001 error
9. I attempted to log back in, but it took several minutes (the game said I was still logged in), but when I was able to get back in, I was out of crafting and had lost all my materials.


Connection Specs
- Type of internet connection/provider: Comcast Xfinity CATV/Fiber, 250Mbps
- Modem maker/model number: Cisco DPC3941T

PC Specs
-=-=-=-=- System Information -=-=-=-=-

Host Name: MISSION-CONTROL
OS Name: Microsoft Windows 10 Pro
OS Version: 10.0.10586 N/A Build 10586
OS Manufacturer: Microsoft Corporation
OS Configuration: Standalone Workstation
OS Build Type: Multiprocessor Free
Registered Owner: Josh
Registered Organization:
Product ID: 00330-80000-00000-AA184
Original Install Date: 12/17/2015, 3:44:58 AM
System Boot Time: 9/21/2016, 9:25:07 PM
System Manufacturer: Gigabyte Technology Co., Ltd.
System Model: Z97X-SLI
System Type: x64-based PC
Processor(s): 1 Processor(s) Installed.
[01]: Intel64 Family 6 Model 60 Stepping 3 GenuineIntel ~4001 Mhz
BIOS Version: American Megatrends Inc. F7, 10/17/2014
Windows Directory: C:\WINDOWS
System Directory: C:\WINDOWS\system32
Boot Device: \Device\HarddiskVolume1
System Locale: en-us;English (United States)
Input Locale: en-us;English (United States)
Time Zone: (UTC-06:00) Central Time (US & Canada)
Total Physical Memory: 16,245 MB
Available Physical Memory: 9,576 MB
Virtual Memory: Max Size: 32,629 MB
Virtual Memory: Available: 19,027 MB
Virtual Memory: In Use: 13,602 MB
Page File Location(s): F:\pagefile.sys
Domain: WORKGROUP
Logon Server: \\MicrosoftAccount
Hotfix(s): 17 Hotfix(s) Installed.
[01]: KB3116900
[02]: KB3124200
[03]: KB3124262
[04]: KB3124263
[05]: KB3135173
[06]: KB3139907
[07]: KB3140741
[08]: KB3140743
[09]: KB3140768
[10]: KB3149135
[11]: KB3150513
[12]: KB3161102
[13]: KB3172729
[14]: KB3173428
[15]: KB3181403
[16]: KB3188128
[17]: KB3185614
Network Card(s): 2 NIC(s) Installed.
[01]: Intel(R) Ethernet Connection I217-V
Connection Name: Local Area Connection
Status: Media disconnected
[02]: TP-LINK 802.11ac Network Adapter
Connection Name: Wi-Fi
DHCP Enabled: Yes
DHCP Server: 192.168.1.1
IP address(es)
[01]: 192.168.1.122
[02]: fe80::28e9:d2:72eb:8cd3
Hyper-V Requirements: VM Monitor Mode Extensions: Yes
Virtualization Enabled In Firmware: Yes
Second Level Address Translation: Yes
Data Execution Prevention Available: Yes

-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-

Laptop Model Name: N/A
Laptop Model Number: N/A

Gamepad Manufacturer: None
Gamepad Model Name: None
Gamepad Part Number: None

Browser Information
- Name and version of the browser currently in-use: Google Chrome 53.0.2785.116
- Internet Explorer Version: Edge

Please note:

These materials represented a considerable output of time, gil (at least 600,000 gil), and Allagan Tomestones of Lore (750) to acquire, and with my limited playtime, it will take me several weeks to be able to replace it all, at which point I may no longer need the item I was trying to craft. This has been extremely discouraging to me, as I had expended most of my saved-up currency and materials for this task.