Metadata write error

I keep getting this metadata error. Once after cropping and white point. And then again after converting my negatives. I followed the instructions to update DNG preview and metadata. And then it told me to read metadata. I did that and then converted negatives and then it’s back again?
I’m new to this. this is actually my first roll of scans and while I’m learning a lot this is the one thing I got nothing for

Hi! Just closing the loop on this since it was handled one on one.

If anyone else has this issue after using the “File > Plugin Extras > Update Vuescan/Silverfast DNG” utility, make sure you are following the instructions to run “Photo > Read Metadata From File” after running the utility.

The issue here I believe was that the user ran “Update DNG Preview and Metadata” after running the utility. Doing that will result in this error.


I get this error too. Although yesterday I only did one photo conversion at a time and didn’t see the error. It seemed to correlate with the upgrade of the newest version of LRC.

I’m getting this error as well, since updating to the latest version. I’m not sure what to do though since I’m not using Vuescan / Silverfast or DNG. And it only seems to happen when I convert in batches, though it doesn’t happen to every single image in a batch (though it does happen to most of them). If I go through and click each one afterward it will export the metadata fine. Are there any other solutions to this?



Hi @MilesS and @hugh

Thanks for letting me know… I’m not sure what would be causing this and I haven’t been able to replicate the issue on my system yet (MacOS 10.15.7, LrC 11.0).

It’s helpful to know that this seems to happen only in batch mode.

If you find any more clues as to why it happens in some instances but not others, it would be very helpful to know!

It would also be helpful to know more about your systems, so I can see if perhaps it is a system-specific issue. If you have a second, could you please go to “Help > System Info” in Lightroom, and then copy/paste the entire top section down to the plugin info? That would be great to know!


Here’s the system info:

Lightroom Classic version: 11.0 [ 202110120910-0bccc70d ]
License: Creative Cloud
Language setting: en-US
Operating system: Mac OS 11
Version: 11.6.1 [20G224]
Application architecture: x64
Logical processor count: 6
Processor speed: 3.0GHz
SqLite Version: 3.36.0
Built-in memory: 8,192.0 MB
Real memory available to Lightroom: 8,192.0 MB
Real memory used by Lightroom: 532.4 MB (6.4%)
Virtual memory used by Lightroom: 14,912.2 MB
Memory cache size: 550.8MB
Internal Camera Raw version: 14.0 [ 950 ]
Maximum thread count used by Camera Raw: 4
Camera Raw SIMD optimization: SSE2,AVX,AVX2
Camera Raw virtual memory: 976MB / 4095MB (23%)
Camera Raw real memory: 982MB / 8192MB (11%)
Displays: 1) 5120x2880

Graphics Processor Info:
Metal: AMD Radeon Pro 570X

Application folder: /Applications/Adobe Lightroom Classic
Library Path: /Users/milesinla/Pictures/Lightroom/PhotoCatalog-2-v10-v11.lrcat
Settings Folder: /Users/milesinla/Library/Application Support/Adobe/Lightroom

Installed Plugins:

  1. Any Vision
  2. ColorChecker Camera Calibration
  3. HDR Efex Pro 2
  4. LR/Transporter
  5. Negative Lab Pro
  6. Validator

Hope that helps. Everything else works great, just have to go through and write the metadata, which is kind of tedious. Thanks for your help though.


1 Like


I just posted a listing about this issue. I get this error whether I convert in a batch, or one negative at a time. It occurs in most, but not all instances of negative conversion.

Here’s a copy of my posting:

After converting negatives with NLP v2.3 in Lightroom Classic V11.1, each converted negative displays an exclamation mark in the upper right corner. When I click on it, the message “There was an unknown error while writing metadata to this photo. Retry” My options are: “Retry Metadata export” or “Import Settings from Disk”. I chose the “Retry” option, which seems to take care of the issue. But, this is time consuming because I have to do this for every negative converted y NLP. This began after I upgraded to NLP 2.3.

Do you have any recommendations to correct this issue?

Thank you,

This is the system information from Lightroom Classic:

Lightroom Classic version: 11.1 [ 202112022200-7fd1f998 ]
License: Creative Cloud
Language setting: en-US
Operating system: Mac OS 11
Version: 11.6.2 [20G314]
Application architecture: x64
Logical processor count: 4
Processor speed: 3.4GHz
SqLite Version: 3.36.0
Built-in memory: 24,576.0 MB
Real memory available to Lightroom: 24,576.0 MB
Real memory used by Lightroom: 5,599.6 MB (22.7%)
Virtual memory used by Lightroom: 15,366.6 MB
Memory cache size: 634.1MB
Internal Camera Raw version: 14.1 [ 993 ]
Maximum thread count used by Camera Raw: 3
Camera Raw SIMD optimization: SSE2,AVX,AVX2
Camera Raw virtual memory: 2767MB / 12287MB (22%)
Camera Raw real memory: 2771MB / 24576MB (11%)
Displays: 1) 5120x2880

Graphics Processor Info:
Metal: AMD Radeon Pro 570

Application folder: /Applications/Adobe Lightroom Classic
Library Path: /Users/StevenBaum_1/Pictures/Lightroom/Lightroom Catalog-2-v10-v11.lrcat
Settings Folder: /Users/StevenBaum_1/Library/Application Support/Adobe/Lightroom

Installed Plugins:

  1. AdobeStock
  2. Aperture/iPhoto Importer Plug-in
  3. DxO PhotoLab 2
  4. DxO PhotoLab 2 Importer
  5. Facebook
  6. Flickr
  7. HDR Efex Pro 2
  8. Negative Lab Pro
  9. Nikon Tether Plugin
  10. Plugin Parameters

Config.lua flags: None

AudioDeviceIOBlockSize: 512
AudioDeviceName: $$$/dvaaudiodevice/SystemDefaultAndEffectiveDeviceName=System Default - Built-in Output#{comment}DVAAU-4201250: Open the audio hardware preferences page.
AudioDeviceNumberOfChannels: 2
AudioDeviceSampleRate: 44100
Build: LR5x38
CoreImage: true
GL_RENDERER: AMD Radeon Pro 570 OpenGL Engine
GL_VENDOR: ATI Technologies Inc.
GL_VERSION: 2.1 ATI-4.6.21
OGLEnabled: true
GL_EXTENSIONS: GL_ARB_color_buffer_float GL_ARB_depth_buffer_float GL_ARB_depth_clamp GL_ARB_depth_texture GL_ARB_draw_buffers GL_ARB_draw_elements_base_vertex GL_ARB_draw_instanced GL_ARB_fragment_program GL_ARB_fragment_program_shadow GL_ARB_fragment_shader GL_ARB_framebuffer_object GL_ARB_framebuffer_sRGB GL_ARB_half_float_pixel GL_ARB_half_float_vertex GL_ARB_imaging GL_ARB_instanced_arrays GL_ARB_multisample GL_ARB_multitexture GL_ARB_occlusion_query GL_ARB_pixel_buffer_object GL_ARB_point_parameters GL_ARB_point_sprite GL_ARB_provoking_vertex GL_ARB_seamless_cube_map GL_ARB_shader_objects GL_ARB_shader_texture_lod GL_ARB_shading_language_100 GL_ARB_shadow GL_ARB_shadow_ambient GL_ARB_sync GL_ARB_texture_border_clamp GL_ARB_texture_compression GL_ARB_texture_compression_rgtc GL_ARB_texture_cube_map GL_ARB_texture_env_add GL_ARB_texture_env_combine GL_ARB_texture_env_crossbar GL_ARB_texture_env_dot3 GL_ARB_texture_float GL_ARB_texture_mirrored_repeat GL_ARB_texture_non_power_of_two GL_ARB_texture_rectangle GL_ARB_texture_rg GL_ARB_transpose_matrix GL_ARB_vertex_array_bgra GL_ARB_vertex_blend GL_ARB_vertex_buffer_object GL_ARB_vertex_program GL_ARB_vertex_shader GL_ARB_window_pos GL_EXT_abgr GL_EXT_bgra GL_EXT_bindable_uniform GL_EXT_blend_color GL_EXT_blend_equation_separate GL_EXT_blend_func_separate GL_EXT_blend_minmax GL_EXT_blend_subtract GL_EXT_clip_volume_hint GL_EXT_debug_label GL_EXT_debug_marker GL_EXT_depth_bounds_test GL_EXT_draw_buffers2 GL_EXT_draw_range_elements GL_EXT_fog_coord GL_EXT_framebuffer_blit GL_EXT_framebuffer_multisample GL_EXT_framebuffer_object GL_EXT_framebuffer_sRGB GL_EXT_geometry_shader4 GL_EXT_gpu_program_parameters GL_EXT_gpu_shader4 GL_EXT_multi_draw_arrays GL_EXT_packed_depth_stencil GL_EXT_packed_float GL_EXT_provoking_vertex GL_EXT_rescale_normal GL_EXT_secondary_color GL_EXT_separate_specular_color GL_EXT_shadow_funcs GL_EXT_stencil_two_side GL_EXT_stencil_wrap GL_EXT_texture_array GL_EXT_texture_compression_dxt1 GL_EXT_texture_compression_s3tc GL_EXT_texture_env_add GL_EXT_texture_filter_anisotropic GL_EXT_texture_integer GL_EXT_texture_lod_bias GL_EXT_texture_mirror_clamp GL_EXT_texture_rectangle GL_EXT_texture_shared_exponent GL_EXT_texture_sRGB GL_EXT_texture_sRGB_decode GL_EXT_timer_query GL_EXT_transform_feedback GL_EXT_vertex_array_bgra GL_APPLE_aux_depth_stencil GL_APPLE_client_storage GL_APPLE_element_array GL_APPLE_fence GL_APPLE_float_pixels GL_APPLE_flush_buffer_range GL_APPLE_flush_render GL_APPLE_object_purgeable GL_APPLE_packed_pixels GL_APPLE_pixel_buffer GL_APPLE_rgb_422 GL_APPLE_row_bytes GL_APPLE_specular_vector GL_APPLE_texture_range GL_APPLE_transform_hint GL_APPLE_vertex_array_object GL_APPLE_vertex_array_range GL_APPLE_vertex_point_size GL_APPLE_vertex_program_evaluators GL_APPLE_ycbcr_422 GL_ATI_blend_equation_separate GL_ATI_blend_weighted_minmax GL_ATI_separate_stencil GL_ATI_texture_compression_3dc GL_ATI_texture_env_combine3 GL_ATI_texture_float GL_ATI_texture_mirror_once GL_IBM_rasterpos_clip GL_NV_blend_square GL_NV_conditional_render GL_NV_depth_clamp GL_NV_

Thanks @steve1

I’m still looking into this and will hopefully have a fix soon.

In the meantime, if you experience this, you may be able to save time by selecting all of the images at once that display that metadata error message, and then clicking the message. It should let you fix all of the images at once (rather than one by one).


Thanks for reaching out, Nick. One additional thing I hadn’t mentioned: the Lightroom photos are a network drive. Lightroom and it’s associated catalog files are on the iMac drive.